litchfield twin scroll turbo
28 September 2011, 01:15 PM
#1111
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We won't know what the new specification will do until we test it. Then we will know how (assuming it works) it sits within the current range and specs.
30 September 2011, 01:37 PM
#1115
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just wanted to share my cituation with the LM400
I and two tuning companies have not been able to find any problems in any systems of the car, so the answer to Y the LM400 on my stock 2.0 ej207 spools to 1 bar at 4000rpm in 3rd is unclear
today we're installing my old VF36 to see how it performs, after this things should be more clear
I and two tuning companies have not been able to find any problems in any systems of the car, so the answer to Y the LM400 on my stock 2.0 ej207 spools to 1 bar at 4000rpm in 3rd is unclear
today we're installing my old VF36 to see how it performs, after this things should be more clear
30 September 2011, 01:41 PM
#1116
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Hold on.....
The load is greatly reduced for that gear.
Are you using per-gear boost control?
What is the boost of 1bar in 4th and 6th?
The load is greatly reduced for that gear.
Are you using per-gear boost control?
What is the boost of 1bar in 4th and 6th?
30 September 2011, 01:44 PM
#1117
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we do not use boost per gear, you've seen my graphs and so did Iain, when I spoke to him I clearly stated that I'm getting 1 bar at 4000 rpm in 3rd, and he clearly stated that it should be at 3000 in 3rd
to be honest I do not know when it spools to 1 bar in 4th, however all the graphs I have posted here earlier are done in 4 me thinks, and looking at them it is obvious that it doesn't spool anywhere like what you had on yours for lm400 billet
as i said we have checked everything we could, I had a second mapper to look at the map to see of the problem lies in the ECU, we changed all the gaskets on the exhaust from the block to downpipe and re-don the manifold, uppipe and downpipe in thermo materials, we double checked the spark plugs, but so far situation didn't improve
when with second mapper we did a test drive to start with he asked if I got something like a gt30 installed, but when he saw the size of the lm, he was very surprised
to be honest I do not know when it spools to 1 bar in 4th, however all the graphs I have posted here earlier are done in 4 me thinks, and looking at them it is obvious that it doesn't spool anywhere like what you had on yours for lm400 billet
as i said we have checked everything we could, I had a second mapper to look at the map to see of the problem lies in the ECU, we changed all the gaskets on the exhaust from the block to downpipe and re-don the manifold, uppipe and downpipe in thermo materials, we double checked the spark plugs, but so far situation didn't improve
when with second mapper we did a test drive to start with he asked if I got something like a gt30 installed, but when he saw the size of the lm, he was very surprised
Last edited by Ilya; 30 September 2011 at 01:54 PM.
30 September 2011, 10:17 PM
#1118
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we do not use boost per gear, you've seen my graphs and so did Iain, when I spoke to him I clearly stated that I'm getting 1 bar at 4000 rpm in 3rd, and he clearly stated that it should be at 3000 in 3rd
to be honest I do not know when it spools to 1 bar in 4th, however all the graphs I have posted here earlier are done in 4 me thinks, and looking at them it is obvious that it doesn't spool anywhere like what you had on yours for lm400 billet
as i said we have checked everything we could, I had a second mapper to look at the map to see of the problem lies in the ECU, we changed all the gaskets on the exhaust from the block to downpipe and re-don the manifold, uppipe and downpipe in thermo materials, we double checked the spark plugs, but so far situation didn't improve
when with second mapper we did a test drive to start with he asked if I got something like a gt30 installed, but when he saw the size of the lm, he was very surprised
to be honest I do not know when it spools to 1 bar in 4th, however all the graphs I have posted here earlier are done in 4 me thinks, and looking at them it is obvious that it doesn't spool anywhere like what you had on yours for lm400 billet
as i said we have checked everything we could, I had a second mapper to look at the map to see of the problem lies in the ECU, we changed all the gaskets on the exhaust from the block to downpipe and re-don the manifold, uppipe and downpipe in thermo materials, we double checked the spark plugs, but so far situation didn't improve
when with second mapper we did a test drive to start with he asked if I got something like a gt30 installed, but when he saw the size of the lm, he was very surprised
Perhaps it's time for you to speak to Iain again.
01 October 2011, 12:19 AM
#1119
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I doubt you would see 1bar at 3k in 3rd. I was seeing 1bar @ circa 3100 in 4th on mine (this was logged, so accurate) iirc. 3rd would be a few hundred rpm later. All in all there would still appear to be a problem regardless.
Perhaps it's time for you to speak to Iain again.
Perhaps it's time for you to speak to Iain again.
just need to see what we get with vf36 now
17 October 2011, 11:26 AM
#1120
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Our best result with 1.5 boost (Vpower) stock TMIC on LM450. Ext. temperature was about 30°C (so HOT) so intake temp. was very high.
50kgm at 4200 rpm 395ps at 6300rpm. The Blitz meter show similar value of maha dyno. With 10% of meth we reached about 420ps.
http://japan-hobby.blogspot.com/2011...c-type-ra.html
50kgm at 4200 rpm 395ps at 6300rpm. The Blitz meter show similar value of maha dyno. With 10% of meth we reached about 420ps.
http://japan-hobby.blogspot.com/2011...c-type-ra.html
17 October 2011, 01:41 PM
#1121
Scooby Regular
OK.. all things being equal, you either have an inlet restriction or a restriction from the TMIC.
I failed to get much over 405bhp with the LM450 until I got rid of the OE airbox and TMIC. Power then shot up to over 440bhp with a FMIC and Induction Kit (still on VPower).
Time to put your hand in your pocket again.
I failed to get much over 405bhp with the LM450 until I got rid of the OE airbox and TMIC. Power then shot up to over 440bhp with a FMIC and Induction Kit (still on VPower).
Time to put your hand in your pocket again.
17 October 2011, 10:17 PM
#1124
17 October 2011, 10:19 PM
#1125
OK.. all things being equal, you either have an inlet restriction or a restriction from the TMIC.
I failed to get much over 405bhp with the LM450 until I got rid of the OE airbox and TMIC. Power then shot up to over 440bhp with a FMIC and Induction Kit (still on VPower).
Time to put your hand in your pocket again.
I failed to get much over 405bhp with the LM450 until I got rid of the OE airbox and TMIC. Power then shot up to over 440bhp with a FMIC and Induction Kit (still on VPower).
Time to put your hand in your pocket again.
17 October 2011, 10:39 PM
#1126
Scooby Regular
18 October 2011, 08:14 AM
#1128
Scooby Regular
I dont think the gruppem airbox is an issue. In Japan is used on high powered subby with stroker etc. Like wrote in a previous post i tried also an apexi big filter but the result is the same.
Then the big pipe take a lot of air from the front
http://3.bp.blogspot.com/-ntG4mQ9OMy...0/DSCN2913.JPG
Dont forget the ext. temperature (30° and 40->46° of intake). With Uk temperature i'm sure that the power is more than 400ps at 1.5 bar.
Cyao
Then the big pipe take a lot of air from the front
http://3.bp.blogspot.com/-ntG4mQ9OMy...0/DSCN2913.JPG
Dont forget the ext. temperature (30° and 40->46° of intake). With Uk temperature i'm sure that the power is more than 400ps at 1.5 bar
.Cyao
Last edited by johnny_0; 22 October 2011 at 09:27 PM.
18 October 2011, 09:12 AM
#1130
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yes here the same; now about 10/12°C. But in this period very busy with my job so not time to drive the car with this low temp 
. I'm sure a lot better (i hope so). I will post the new blitz dyno result as soon as possible with this cold temp.
yes a FMIC in the near future.
Thks
. I'm sure a lot better (i hope so). I will post the new blitz dyno result as soon as possible with this cold temp.yes a FMIC in the near future.
Thks
Last edited by johnny_0; 18 October 2011 at 09:20 AM.
22 October 2011, 07:25 PM
#1131
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Today i drove the car with about 10°c. same boost pressure, only Vpower etc. Now max power on power meter was 408ps at 6200 rpm. 53kgm at 4200rpm in 5th gear. I tried several time and max power was always a value near 410ps. No camera with me but these are the values recorded on blitz meter.
The map was a bit lean (yes cause more cold air) so a rescaling of airflow it was necessary. Now near the 5v and 400g/s limit.
The map was a bit lean (yes cause more cold air) so a rescaling of airflow it was necessary. Now near the 5v and 400g/s limit.
Last edited by johnny_0; 22 October 2011 at 10:29 PM.
05 November 2011, 06:42 PM
#1132
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someone know what are the following data about LM450-S60?
- entrance and outer diameter of compressor wheel and number of blade
- outer and exit diameter of turbine wheel, number of blade
- entrance and outer diameter of compressor wheel and number of blade
- outer and exit diameter of turbine wheel, number of blade
19 November 2011, 05:43 PM
#1133
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i had very busy couple of months, but today I finally tested my car with my old vf36 and everything seems absolutely normal, in fourth foot to the floor i get 1 bar at 3000rpm.
so now it looks like the LM400 Billet is the cause of the late spool and maybe even low hp numbers on the dyno, but lets see. I will call Iain this Monday to see what we can do here.
I have my hopes up
so now it looks like the LM400 Billet is the cause of the late spool and maybe even low hp numbers on the dyno, but lets see. I will call Iain this Monday to see what we can do here.
I have my hopes up
Last edited by Ilya; 19 November 2011 at 06:56 PM.
20 November 2011, 06:04 PM
#1134
Ecu Specialist
Ilya, there is no comparison between an LM400 and a VF36 !! The VF36 is a tiny turbo in comparison and I would be amazed if you had not reported this. I have not been back through the thread very far but what boost control system is in use, two port bcs or three port bcs? What is determining the duty cycles used ? That will make a huge difference to spill in terms of what it is and how its set up.
I have not personally seen much of a problem with the LM's and spool once this is sorted.
I have the LM500 billet on my car now (just) and once thats all mapped etc I will contribute to this thread with some results.
Its best to use 4th gear for turbo spool comparisons btw, third is too low really as Shaun has mentioned.
cheers
bob
I have not personally seen much of a problem with the LM's and spool once this is sorted.
I have the LM500 billet on my car now (just) and once thats all mapped etc I will contribute to this thread with some results.
Its best to use 4th gear for turbo spool comparisons btw, third is too low really as Shaun has mentioned.
cheers
bob
20 November 2011, 07:56 PM
#1136
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Ilya, there is no comparison between an LM400 and a VF36 !! The VF36 is a tiny turbo in comparison and I would be amazed if you had not reported this. I have not been back through the thread very far but what boost control system is in use, two port bcs or three port bcs? What is determining the duty cycles used ? That will make a huge difference to spill in terms of what it is and how its set up.
I have not personally seen much of a problem with the LM's and spool once this is sorted.
I have the LM500 billet on my car now (just) and once thats all mapped etc I will contribute to this thread with some results.
Its best to use 4th gear for turbo spool comparisons btw, third is too low really as Shaun has mentioned.
cheers
bob
I have not personally seen much of a problem with the LM's and spool once this is sorted.
I have the LM500 billet on my car now (just) and once thats all mapped etc I will contribute to this thread with some results.
Its best to use 4th gear for turbo spool comparisons btw, third is too low really as Shaun has mentioned.
cheers
bob
I at any point did not try to compare these two turbos, I mention this only because with LM400 on my car we were getting 1 bar in fourth at 4000 rpm and no one could understand y. we even took off the boost control pipe off the turbo without any improvement on spool.
so we decided to install my original VF36 back simply to make sure that it would spool adequately on my engine, which it does.
In terms of boost control, the car is stock with original solenoid.
20 November 2011, 08:40 PM
#1137
Ecu Specialist
Hi, ok thats clear then, as I mentioned I have not personally come across any problems with the LM400 spooling given the supporting mods and control systems were ok, which was why I asked. I assume when you removed the boost control pipe you blanked it, otherwise you are leaking boost and whilst the peak boost may be greater spool would not be any better.
Cliff I chose that turbo simply because I consider it the best option for my needs and requirements. I wanted a std fit turbo capable of 500 to 550 bhp on V Power with good response. Having mapped cars fitted with the LM500 billet and non billet I have been always impressed with the results, for a large turbo the spool has been excellent. the lower range versions have also shown up in a very good light (for me at least).
I am very much looking forward to getting my car working as it should be, its a frustrating time right now due to the problem with the intercooler which has held us back.
cheers
bob
Cliff I chose that turbo simply because I consider it the best option for my needs and requirements. I wanted a std fit turbo capable of 500 to 550 bhp on V Power with good response. Having mapped cars fitted with the LM500 billet and non billet I have been always impressed with the results, for a large turbo the spool has been excellent. the lower range versions have also shown up in a very good light (for me at least).
I am very much looking forward to getting my car working as it should be, its a frustrating time right now due to the problem with the intercooler which has held us back.
cheers
bob
21 November 2011, 06:25 PM
#1138
Cliff I chose that turbo simply because I consider it the best option for my needs and requirements. I wanted a std fit turbo capable of 500 to 550 bhp on V Power with good response. Having mapped cars fitted with the LM500 billet and non billet I have been always impressed with the results, for a large turbo the spool has been excellent. the lower range versions have also shown up in a very good light (for me at least).
cheers
bob
cheers
bob
Thanks for mapping mine recently also
