litchfield twin scroll turbo
13 February 2010, 07:01 PM
#302
Well - collected it today from Iain with the repaired downpipe. It's running very rich, but nevertheless it's "chalk and cheese" compared to before. Actually, I think Len (Subaru4You) and Iain stitched me up and pulled a fast one, I don't think they really fitted the LM480 at all - there's simply no comparison 
It pulls like a train, with a wallop in the back in any gear as it comes on boost - but very smooth and progressive with it, right the way to the redline.
In 6th gear, boost reached 1 bar at 3000rpm, and 1.8bar at 3300rpm; Iain hopes the map tweak will lower that further still.
The car is bordering on being a bit scary now - I've never had torque steer in a Scoob before but it's got it now
- and insane speeds are reached immensely quickly. Grin factor - ten out of ten 
It's booked in for a map tweak - and, hopefully, the "megarom" per-gear mapping - on Thursday with Simon/JGM up at Len's so, with a following wind, RR figures will follow at the end of the week.
I had one instance of clouds of oily-smoke out of the back (one of the issues that caused us to draw breath and get the car to Iain's in the first place, as the turbo was possibly to blame). This was after the first blast after crawling through the slow Newbury traffic - I stopped off at S4U after picking the car up from Iain and it had been fine up until then.
I'm 90% sure it's related to the catch can breather which I think is a bit pinched by the bonnet. I have a new custom 3-inlet unit arriving in a few days so will sort it properly then, and run the vent pipe somewhere out of the way.
For now, I'm just pleased to have it back
It pulls like a train, with a wallop in the back in any gear as it comes on boost - but very smooth and progressive with it, right the way to the redline.
In 6th gear, boost reached 1 bar at 3000rpm, and 1.8bar at 3300rpm; Iain hopes the map tweak will lower that further still.
The car is bordering on being a bit scary now - I've never had torque steer in a Scoob before but it's got it now
- and insane speeds are reached immensely quickly. Grin factor - ten out of ten It's booked in for a map tweak - and, hopefully, the "megarom" per-gear mapping - on Thursday with Simon/JGM up at Len's so, with a following wind, RR figures will follow at the end of the week.
I had one instance of clouds of oily-smoke out of the back (one of the issues that caused us to draw breath and get the car to Iain's in the first place, as the turbo was possibly to blame). This was after the first blast after crawling through the slow Newbury traffic - I stopped off at S4U after picking the car up from Iain and it had been fine up until then.
I'm 90% sure it's related to the catch can breather which I think is a bit pinched by the bonnet. I have a new custom 3-inlet unit arriving in a few days so will sort it properly then, and run the vent pipe somewhere out of the way.
For now, I'm just pleased to have it back
Last edited by TimH; 13 February 2010 at 07:20 PM.
13 February 2010, 08:25 PM
#304
Scooby Regular
Tim,
If you are getting what feels like torque steer, you need to get the handling set-up looked at. You will probably find the front is lifting too much and causing the steering to go light. I had the same problem and sorted it with set-up changes in the handling department. I have more torque than you and I don't get that problem now, so it can be sorted.
Hat's off to Litchfield Imports for sorting your issues out.
If you are getting what feels like torque steer, you need to get the handling set-up looked at. You will probably find the front is lifting too much and causing the steering to go light. I had the same problem and sorted it with set-up changes in the handling department. I have more torque than you and I don't get that problem now, so it can be sorted.
Hat's off to Litchfield Imports for sorting your issues out.
14 February 2010, 12:55 AM
#305
If you are getting what feels like torque steer, you need to get the handling set-up looked at. You will probably find the front is lifting too much and causing the steering to go light. I had the same problem and sorted it with set-up changes in the handling department. I have more torque than you and I don't get that problem now, so it can be sorted.
14 February 2010, 03:42 PM
#306
Scooby Regular
Tim,
Have a chat with Iain...... he knows all about this area intimately and has vast knowledge/experience on how an Impreza should handle on the road. I would suggest you book Iain for a couple of hours to set your suspension up to teach you "feel" and how this can be altered with the suspension. He will be able to do this WITH YOU on the road. I did this with Iain and my Spec C when I needed to understand how rebound and compression works with what I was experiencing on the road. It was invaluable in understanding things for my own good and after minor personal tweaks of my own (after Iain and myself agreed a very good base set-up), it was the suspension set-up that did the business at the last two rounds of ScoobySprint last year. It's all about "feel" and not about "how many clicks". Big differences can be made overall with tyre pressures and geometry, so it would be worth ensuring everything is balanced. Again, Iain has all the equipment/knowledge/experience for this as well.
Within a very short period of time between Round 3 and Round 4, my car went from "dog" to "god" with the help of Litchfield Imports (suspension set-up), Tracktive (geometry) and AST UK. In total it took about 2hrs with Iain and then geometry changes with Tracktive. A lot of people profess to be experts in this area, but I only trust those with results that back that up.
The car has been "scary"...... now it is controllable and very quick. There is a distinct difference.
Have a chat with Iain...... he knows all about this area intimately and has vast knowledge/experience on how an Impreza should handle on the road. I would suggest you book Iain for a couple of hours to set your suspension up to teach you "feel" and how this can be altered with the suspension. He will be able to do this WITH YOU on the road. I did this with Iain and my Spec C when I needed to understand how rebound and compression works with what I was experiencing on the road. It was invaluable in understanding things for my own good and after minor personal tweaks of my own (after Iain and myself agreed a very good base set-up), it was the suspension set-up that did the business at the last two rounds of ScoobySprint last year. It's all about "feel" and not about "how many clicks". Big differences can be made overall with tyre pressures and geometry, so it would be worth ensuring everything is balanced. Again, Iain has all the equipment/knowledge/experience for this as well.
Within a very short period of time between Round 3 and Round 4, my car went from "dog" to "god" with the help of Litchfield Imports (suspension set-up), Tracktive (geometry) and AST UK. In total it took about 2hrs with Iain and then geometry changes with Tracktive. A lot of people profess to be experts in this area, but I only trust those with results that back that up.
The car has been "scary"...... now it is controllable and very quick. There is a distinct difference.
14 February 2010, 04:26 PM
#307
Thanks Shaun - I think you have 3-way adjustable ASTs whereas mine are the lowly 12-ways, where you can only adjust rebound. I have played with the settings in the past and have settled on a softer 5-off-softest at the front for the road, compared to 10 or 11 on the track - I will have a play and see if the harder settings minimise the lift/torque steer.
Having just paid Curtis to service the rear ASTs (including one brand new one as it was seized
) I don't really want to junk the correct setup just yet 
But I will speak to Iain in due course, once the map tweaked and I'm more used to the car
Having just paid Curtis to service the rear ASTs (including one brand new one as it was seized
) I don't really want to junk the correct setup just yet But I will speak to Iain in due course, once the map tweaked and I'm more used to the car
14 February 2010, 10:42 PM
#308
Scooby Regular
Tim,
The single adjustment on yours adjusts both rebound and compression. Yes I do have the 3 ways. You do not need this extra functionality for what you need to do though.
The single adjustment on yours adjusts both rebound and compression. Yes I do have the 3 ways. You do not need this extra functionality for what you need to do though.
15 February 2010, 05:59 PM
#309
One step forward, one step back...clouds of smoke again this morning, so much so that it made the road behind me look very foggy 
Parked up and found oil dribbling on to ground via the headers, in the vicinity of the cam covers. An hour or 2 later no oil on dipstick at all and a rather messy road
Looks like a seal's gone somewhere (at least, I hope that's all it is). So, deep joy, it was back on to an AA recovery vehicle to be taken up S4U where it's now patiently waiting to be looked at
Parked up and found oil dribbling on to ground via the headers, in the vicinity of the cam covers. An hour or 2 later no oil on dipstick at all and a rather messy road
Looks like a seal's gone somewhere (at least, I hope that's all it is). So, deep joy, it was back on to an AA recovery vehicle to be taken up S4U where it's now patiently waiting to be looked at
15 February 2010, 10:25 PM
#311
Scooby Regular
One step forward, one step back...clouds of smoke again this morning, so much so that it made the road behind me look very foggy
Parked up and found oil dribbling on to ground via the headers, in the vicinity of the cam covers. An hour or 2 later no oil on dipstick at all and a rather messy road
Looks like a seal's gone somewhere (at least, I hope that's all it is). So, deep joy, it was back on to an AA recovery vehicle to be taken up S4U where it's now patiently waiting to be looked at
Parked up and found oil dribbling on to ground via the headers, in the vicinity of the cam covers. An hour or 2 later no oil on dipstick at all and a rather messy road
Looks like a seal's gone somewhere (at least, I hope that's all it is). So, deep joy, it was back on to an AA recovery vehicle to be taken up S4U where it's now patiently waiting to be looked at
I hope for your sake your bearings have not picked up, if your oil was that low.
22 February 2010, 12:29 PM
#313
Well gents picked my car saturday and must thank Iain and the guys for an A1 job. 
Everything has been done as discussed and he has even lent me a ECU with a base map on it so i could get back home on.
As it wouldn't run with my Simtek at all, now just gotta wait until Simon (JGM) remaps my Simtek tomorrow, then it will
.
Must admit it already sounds very
So i'll be posting up my results once its all finished tomorrow.
Mel
Everything has been done as discussed and he has even lent me a ECU with a base map on it so i could get back home on.
As it wouldn't run with my Simtek at all, now just gotta wait until Simon (JGM) remaps my Simtek tomorrow, then it will
.Must admit it already sounds very
So i'll be posting up my results once its all finished tomorrow.
Mel
Last edited by MelTypeR; 22 February 2010 at 12:30 PM.
23 February 2010, 07:39 PM
#315
Well heres the results and mods below gents....................
MY06 Spec C
Standard Engine Internals
Litchfields LM450-S60 (76mm version) Turbo
Litchfields 800cc Injectors
Perrin 3 port Boost Solenoid
Sard FPR
Miltek 3" Sport Cat'd Full Exhaust System
SFS 3" Intake
Simtek ECU
Hybrid FMIC
K+N CAI Kit
Power v AFR
Power v Boost
Final Power
452.8 BHP 410lb/ft @ 1.7 bar
To say im is an understatement!!!
Big thanks to Both Iain and Simon for all you help
Mel
MY06 Spec C
Standard Engine Internals
Litchfields LM450-S60 (76mm version) Turbo
Litchfields 800cc Injectors
Perrin 3 port Boost Solenoid
Sard FPR
Miltek 3" Sport Cat'd Full Exhaust System
SFS 3" Intake
Simtek ECU
Hybrid FMIC
K+N CAI Kit
Power v AFR
Power v Boost
Final Power
452.8 BHP 410lb/ft @ 1.7 bar
To say im
is an understatement!!!Big thanks to Both Iain and Simon for all you help
Mel
Last edited by MelTypeR; 23 February 2010 at 07:40 PM.
23 February 2010, 07:47 PM
#316
Excellent results mate
So good in fact, makes me wana keep my Spec C & do what you have, iv got a lot of the bits already apart from turbo & injectors
You need to do Silverstone with us & see how it performs on track.
So good in fact, makes me wana keep my Spec C & do what you have, iv got a lot of the bits already apart from turbo & injectors
You need to do Silverstone with us & see how it performs on track.
Last edited by rickya; 23 February 2010 at 07:51 PM.
23 February 2010, 08:07 PM
#318
Former Sponsor
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Well heres the results and mods below gents....................
MY06 Spec C
Standard Engine Internals
Litchfields LM450-S60 (76mm version) Turbo
Litchfields 800cc Injectors
Perrin 3 port Boost Solenoid
Sard FPR
Miltek 3" Sport Cat'd Full Exhaust System
SFS 3" Intake
Simtek ECU
Hybrid FMIC
K+N CAI Kit
Power v AFR
Power v Boost
Final Power
452.8 BHP 410lb/ft @ 1.7 bar
To say im is an understatement!!!
Big thanks to Both Iain and Simon for all you help
Mel
MY06 Spec C
Standard Engine Internals
Litchfields LM450-S60 (76mm version) Turbo
Litchfields 800cc Injectors
Perrin 3 port Boost Solenoid
Sard FPR
Miltek 3" Sport Cat'd Full Exhaust System
SFS 3" Intake
Simtek ECU
Hybrid FMIC
K+N CAI Kit
Power v AFR
Power v Boost
Final Power
452.8 BHP 410lb/ft @ 1.7 bar
To say im
is an understatement!!!Big thanks to Both Iain and Simon for all you help
Mel
Nice to have met you and love that car!
Simon
23 February 2010, 09:22 PM
#322
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Brilliant results Mel/Simon, right on the money That is a massive useable power band, bet it feels really strong in the mid range as well!
The colour, wheels and now the engine make just about the perfect Spec C!
Iain
PS don’t forget to send back my ECU
That is a massive useable power band, bet it feels really strong in the mid range as well! The colour, wheels and now the engine make just about the perfect Spec C!
Iain
PS don’t forget to send back my ECU
23 February 2010, 09:31 PM
#324
Scooby Regular
Iain,
Cracking results.
Mel,
You must be over the moon. Looks from the graph that it comes on boost really well. 1.5bar at circa 3700 on a rolling road, would suggest it would pull boost sooner on the road in 5th / 6th. Nice one.
Cracking results.
Mel,
You must be over the moon. Looks from the graph that it comes on boost really well.
1.5bar at circa 3700 on a rolling road, would suggest it would pull boost sooner on the road in 5th / 6th. Nice one.
24 February 2010, 08:02 AM
#327
Thanks for all the replys guys.
Ricky - take that for sale ad down mate!!!
Ring Iain and get the conversion down, you def wont be dissapointed. If you want we can meet up soon so you can have a test drive to see what its like. When is the next silverstone track day by the way??
Iain - ECU is wrapped up and ready to come out to you this lunchtime, cant say thanks enough for the loan of that.
Shaun - Its seems to drive pretty much as my old turbo did so really glad i haven't the driveabilty of the car and due to the lower gearing of the JDM 6 speed box 5th/6th are just as lively as 3rd/4th.
Simon - I know Mikes car would make great power, its was in good hands.
Bet he has happy he has moved up on Charlies wall of fame now
p.s cold starting this morning was spot on too!!!
Mel
Ricky - take that for sale ad down mate!!!
Ring Iain and get the conversion down, you def wont be dissapointed. If you want we can meet up soon so you can have a test drive to see what its like. When is the next silverstone track day by the way??
Iain - ECU is wrapped up and ready to come out to you this lunchtime, cant say thanks enough for the loan of that.
Shaun - Its seems to drive pretty much as my old turbo did so really glad i haven't the driveabilty of the car and due to the lower gearing of the JDM 6 speed box 5th/6th are just as lively as 3rd/4th
.Simon - I know Mikes car would make great power, its was in good hands.
Bet he has happy he has moved up on Charlies wall of fame now
p.s cold starting this morning was spot on too!!!
Mel
24 February 2010, 08:15 AM
#329
Scooby Regular
24 February 2010, 12:05 PM
#330
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Well heres the results and mods below gents....................
MY06 Spec C
Standard Engine Internals
Litchfields LM450-S60 (76mm version) Turbo
Litchfields 800cc Injectors
Perrin 3 port Boost Solenoid
Sard FPR
Miltek 3" Sport Cat'd Full Exhaust System
SFS 3" Intake
Simtek ECU
Hybrid FMIC
K+N CAI Kit
452.8 BHP 410lb/ft @ 1.7 bar
To say im is an understatement!!!
Big thanks to Both Iain and Simon for all you help
MY06 Spec C
Standard Engine Internals
Litchfields LM450-S60 (76mm version) Turbo
Litchfields 800cc Injectors
Perrin 3 port Boost Solenoid
Sard FPR
Miltek 3" Sport Cat'd Full Exhaust System
SFS 3" Intake
Simtek ECU
Hybrid FMIC
K+N CAI Kit
452.8 BHP 410lb/ft @ 1.7 bar
To say im
is an understatement!!!Big thanks to Both Iain and Simon for all you help
Cracking results