Tuning guide
11 June 2020, 12:37 AM
#1
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Tuning guide
Evening. Been doing a little research about tuning my 98 JDM wrx classic Impreza and I can’t find a basic tuning guide anywhere. I’m I missing something in the search section?
I would like to get my car mapped but wanted to do a few upgrades before I go. It’s apparently Standard so I’m guessing around 280bhp. But I wanted to know what mods I should do to take it to around 330bhp.
could anyone point me in the right direction? Thanks
I would like to get my car mapped but wanted to do a few upgrades before I go. It’s apparently Standard so I’m guessing around 280bhp. But I wanted to know what mods I should do to take it to around 330bhp.
could anyone point me in the right direction? Thanks
11 June 2020, 10:22 AM
#2
Scooby Regular
Evening. Been doing a little research about tuning my 98 JDM wrx classic Impreza and I can’t find a basic tuning guide anywhere. I’m I missing something in the search section?
I would like to get my car mapped but wanted to do a few upgrades before I go. It’s apparently Standard so I’m guessing around 280bhp. But I wanted to know what mods I should do to take it to around 330bhp.
could anyone point me in the right direction? Thanks
I would like to get my car mapped but wanted to do a few upgrades before I go. It’s apparently Standard so I’m guessing around 280bhp. But I wanted to know what mods I should do to take it to around 330bhp.
could anyone point me in the right direction? Thanks
12 June 2020, 08:43 AM
#5
It's here:
https://www.scoobynet.com/general-te...ing-guide.html
Check out the links at the bottom of page 4 as the original links on page 1 don't work any more.
https://www.scoobynet.com/general-te...ing-guide.html
Check out the links at the bottom of page 4 as the original links on page 1 don't work any more.
12 June 2020, 08:59 AM
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Amazing!!! I found that thread and clicked the links but they didn’t work so I didn’t go any further. Thank you!!
ive basically just bought an import wrx 1999 and it’s very laggy so I’m trying to find out why. If it goes to a rolling road for diag I’d rather have a few bits in place where he could also map and I come out with a little extra power.
ive tried searching for “laggy/lag” but you can imagine the threads I’m finding. It’s all about how laggy is a 3576, etc.
ive basically just bought an import wrx 1999 and it’s very laggy so I’m trying to find out why. If it goes to a rolling road for diag I’d rather have a few bits in place where he could also map and I come out with a little extra power.
ive tried searching for “laggy/lag” but you can imagine the threads I’m finding. It’s all about how laggy is a 3576, etc.
12 June 2020, 10:52 AM
#7
Amazing!!! I found that thread and clicked the links but they didn’t work so I didn’t go any further. Thank you!!
ive basically just bought an import wrx 1999 and it’s very laggy so I’m trying to find out why. If it goes to a rolling road for diag I’d rather have a few bits in place where he could also map and I come out with a little extra power.
ive tried searching for “laggy/lag” but you can imagine the threads I’m finding. It’s all about how laggy is a 3576, etc.
ive basically just bought an import wrx 1999 and it’s very laggy so I’m trying to find out why. If it goes to a rolling road for diag I’d rather have a few bits in place where he could also map and I come out with a little extra power.
ive tried searching for “laggy/lag” but you can imagine the threads I’m finding. It’s all about how laggy is a 3576, etc.
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12 June 2020, 11:05 AM
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owner told me it was dead stock. It had a vent to atmosphere dump valve so I put the original on knowing about the unmetered air principal. I also found three boost leaks. None of this sorted the problem.
only thing it has is a H&S exhaust from the Downpipe back(He told me it was group n but looks more like group a.
only thing it has is a H&S exhaust from the Downpipe back(He told me it was group n but looks more like group a.
12 June 2020, 11:56 AM
#11
owner told me it was dead stock. It had a vent to atmosphere dump valve so I put the original on knowing about the unmetered air principal. I also found three boost leaks. None of this sorted the problem.
only thing it has is a H&S exhaust from the Downpipe back(He told me it was group n but looks more like group a.
only thing it has is a H&S exhaust from the Downpipe back(He told me it was group n but looks more like group a.
I don't think the classic has a cat in the up-pipe that would restrict the turbo spool so chances are the turbo could be worn out or blades damaged. Worth taking to a specialist as you say for a diagnosis.
12 June 2020, 12:06 PM
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Agreed. I researched that the JDM model has a slightly larger turbo and is laggier than the U.K. but this is too much. Literally everyone has said something is wrong. Genuinely thought the dump valve and boost leaks would cure the problem.
it’s just flat until 3750rpm and then finally picks up. I’m putting a boost gauge in tonight to see what it’s running and Holding and I’ll check all vac hoses too.
no I didn’t think it had a cat either but I know the Harvey up pipe get a lot of good reviews so I would do that if needed.
woukd I be right in thinking a TD04/TD05 would be a direct fit?
you guys have been really helpful so far. Thank you
it’s just flat until 3750rpm and then finally picks up. I’m putting a boost gauge in tonight to see what it’s running and Holding and I’ll check all vac hoses too.
no I didn’t think it had a cat either but I know the Harvey up pipe get a lot of good reviews so I would do that if needed.
woukd I be right in thinking a TD04/TD05 would be a direct fit?
you guys have been really helpful so far. Thank you
12 June 2020, 12:30 PM
#14
TD04 and 05's will fit but will require a remap. TD04 good for up to about 280bhp, but various hybrids are available that can make approx 280-310 with great low down acceleration. TD05, has a higher boost threshold.
VF28's can now be reconditioned and there are some companies producing hybrids, which look interesting. I have one on my UK00 and the bearings are getting noisy so I might look into getting a hybrid - probably kill my gears though.
Last edited by Nick_Cat; 12 June 2020 at 12:35 PM.
12 June 2020, 12:56 PM
#15
Where's your coilpack if its on the passenger side of the car it's v5/6 if its in the centre of the manifold its v3/4 in which case you need an ESL daughter board or an aftermarket ECU. If the vf28 has been over spooled/run high boost you could have lost some of the tips off the compressor wheel which need found or they'll end up in the engine. Have you done an ECU reset after fixing your leaks and removing the dump valve.
Last edited by 1509joe; 12 June 2020 at 12:58 PM.
12 June 2020, 01:21 PM
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I haven’t looked for numbers yet but I obviously can. It’s still got the standard heat shield bolted to it.
that’s a good point. I know a very good turbo company who would definitely help me out if I asked for a hybrid.
my coil pack is on the right next to the dump valve.
no I haven’t done a reset. I didn’t even think of that. How would I do it?
that’s a good point. I know a very good turbo company who would definitely help me out if I asked for a hybrid.
my coil pack is on the right next to the dump valve.
no I haven’t done a reset. I didn’t even think of that. How would I do it?
12 June 2020, 01:34 PM
#17
I haven’t looked for numbers yet but I obviously can. It’s still got the standard heat shield bolted to it.
that’s a good point. I know a very good turbo company who would definitely help me out if I asked for a hybrid.
my coil pack is on the right next to the dump valve.
no I haven’t done a reset. I didn’t even think of that. How would I do it?
that’s a good point. I know a very good turbo company who would definitely help me out if I asked for a hybrid.
my coil pack is on the right next to the dump valve.
no I haven’t done a reset. I didn’t even think of that. How would I do it?
12 June 2020, 01:39 PM
#18
I haven’t looked for numbers yet but I obviously can. It’s still got the standard heat shield bolted to it.
that’s a good point. I know a very good turbo company who would definitely help me out if I asked for a hybrid.
my coil pack is on the right next to the dump valve.
no I haven’t done a reset. I didn’t even think of that. How would I do it?
that’s a good point. I know a very good turbo company who would definitely help me out if I asked for a hybrid.
my coil pack is on the right next to the dump valve.
no I haven’t done a reset. I didn’t even think of that. How would I do it?
Paragraph removed at the request of Craig Bellworthy.
I'd bet the turbo has seen some miles on your car and needs changing or rebuilding. I can't remember if the 99 cars have an ODB2 port? They probably won't. Otherwise it would have been worth checking to see if there are any recorded codes in the ECU.
Last edited by BrownPantsRacing; 07 July 2020 at 02:41 PM.
12 June 2020, 01:56 PM
#19
With regards to turbos, I have always found Turbo Dynamics to be brilliant. Very helpful, knowledgeable and won't overcharge you. They even fully inspected my turbo for free before I then spent a fortune upgrading it!
I know lots of people who use Craig Belworthy who advertises lots on the various facebook Subaru groups. In most part he seems to do fine, but he really screwed one of my mates over with his turbo and ended up taking his billet turbo internals out, putting them into another turbo and selling that onto another customer as a brand new turbo. Needless to say I'd never use him. He then tried to charge my mate £220 to get HIS OWN turbo back. Madness.
I'd bet the turbo has seen some miles on your car and needs changing or rebuilding. I can't remember if the 99 cars have an ODB2 port? They probably won't. Otherwise it would have been worth checking to see if there are any recorded codes in the ECU.
I know lots of people who use Craig Belworthy who advertises lots on the various facebook Subaru groups. In most part he seems to do fine, but he really screwed one of my mates over with his turbo and ended up taking his billet turbo internals out, putting them into another turbo and selling that onto another customer as a brand new turbo. Needless to say I'd never use him. He then tried to charge my mate £220 to get HIS OWN turbo back. Madness.
I'd bet the turbo has seen some miles on your car and needs changing or rebuilding. I can't remember if the 99 cars have an ODB2 port? They probably won't. Otherwise it would have been worth checking to see if there are any recorded codes in the ECU.
12 June 2020, 02:20 PM
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Yeah I could always call Turbo Dynamics for a quote.
We use Midland Turbo for the cars we work on here and they are always helpful when we want something done. They’ve been really good with my brothers ST turbo upgrade recently.
ive done a search and I think I’ve worked out to check and clear codes so I’ll try this weekend.
We use Midland Turbo for the cars we work on here and they are always helpful when we want something done. They’ve been really good with my brothers ST turbo upgrade recently.
ive done a search and I think I’ve worked out to check and clear codes so I’ll try this weekend.
12 June 2020, 02:28 PM
#23
One of these:
https://www.ebay.co.uk/itm/For-Audi-...UAAOSwPhdVOa-2
A USB OTG adaptor like this (to size the large USB cable down to your phone port:
https://www.ebay.co.uk/itm/Micro-USB...b7541c09e04ecc
Obviously you'll need to check what phone USB connector you need and get a USB OTG adaptor to suit.
Then the BTSSM app and you can start data logging.
Once in set the knock setting to 5 otherwise it will trigger all the time on non-genuine knock events.
https://www.ebay.co.uk/itm/For-Audi-...UAAOSwPhdVOa-2
A USB OTG adaptor like this (to size the large USB cable down to your phone port:
https://www.ebay.co.uk/itm/Micro-USB...b7541c09e04ecc
Obviously you'll need to check what phone USB connector you need and get a USB OTG adaptor to suit.
Then the BTSSM app and you can start data logging.
Once in set the knock setting to 5 otherwise it will trigger all the time on non-genuine knock events.
12 June 2020, 02:47 PM
#24
One of these:
https://www.ebay.co.uk/itm/For-Audi-...UAAOSwPhdVOa-2
A USB OTG adaptor like this (to size the large USB cable down to your phone port:
https://www.ebay.co.uk/itm/Micro-USB...b7541c09e04ecc
Obviously you'll need to check what phone USB connector you need and get a USB OTG adaptor to suit.
Then the BTSSM app and you can start data logging.
Once in set the knock setting to 5 otherwise it will trigger all the time on non-genuine knock events.
https://www.ebay.co.uk/itm/For-Audi-...UAAOSwPhdVOa-2
A USB OTG adaptor like this (to size the large USB cable down to your phone port:
https://www.ebay.co.uk/itm/Micro-USB...b7541c09e04ecc
Obviously you'll need to check what phone USB connector you need and get a USB OTG adaptor to suit.
Then the BTSSM app and you can start data logging.
Once in set the knock setting to 5 otherwise it will trigger all the time on non-genuine knock events.
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15 June 2020, 10:50 AM
#30
Had a quick look there the answer appears to be yes. See attached.
http://www.syvecs.com/downloads/Syve...oth_Module.pdf
Last edited by 1509joe; 24 June 2020 at 08:25 PM.