where do i go next?
where do i go next?
hi,here is where im at.
1998 sti type r
sti9 jdm motor
h&s sports cat downpipe
decat centre
tsl backbox
walbro
hybrid fmic
rcm induction
apexi power fc
ihi vf48
pfr7b plugs
338bhp/316lb ft.......1.5 bar.
hmmm,what are my options to get to 360-370?
will just 550s get me there?
merry xmas everyone!
1998 sti type r
sti9 jdm motor
h&s sports cat downpipe
decat centre
tsl backbox
walbro
hybrid fmic
rcm induction
apexi power fc
ihi vf48
pfr7b plugs
338bhp/316lb ft.......1.5 bar.
hmmm,what are my options to get to 360-370?
will just 550s get me there?
merry xmas everyone!
how much more boost can the turbo run?
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my question is will JUST a set of 550s and map tweek give out decent gains?(when turbo is running 1.5 bar already)
What's the point in having extra power if you're scared to use it incase you blow the box. Especially if you want to accelerate faster as you say - extra strain on the drivetrain. But it's your money (coming from someone who has had a 'box die on them at Tescos at 6am in the freezing cold (4 years ago)
Methonal is the easiest and cheapest way to see decent power gains.
It's cheaper (alot) to buy than VPower for starters.
Once you have a routine to filling up its easy and not a hassle at all.
Will see good gains with little outlay.
I run 20% meth and the only thing that annoys me is "why didn't I do it sooner".
You will need bigger injectors though and a mapping session.
It's cheaper (alot) to buy than VPower for starters.
Once you have a routine to filling up its easy and not a hassle at all.
Will see good gains with little outlay.
I run 20% meth and the only thing that annoys me is "why didn't I do it sooner".
You will need bigger injectors though and a mapping session.
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From: ECU Mapping - www.JollyGreenMonster.co.uk
550cc injectors will mainly add safety and scope for future, plus allow extra headroom to allow you to have it mapped with meth in the tank also.
Greater boost is mainly going to improve torque as the turbo will fail to flow more air at the higher rpm where peak power is, if you are running 1.5bar peak already - although I assume the apexi powerfc is controlling the boost whcih is only a simple one duty and one target; therefore there might be a small gain buy having rpm dependent boost control.
No mention of headers - ported or tubular may see a small gain.
An improved after market ecu like simtek or syvecs which both have rpm and gear dependent boost control would see gains in both boost control, power and torque and drivability with the faster processors and higher definition map allowing better spark and fuel control - however the gain is not really going to warrent the expense over the powerfc perhaps.
I think money spent chasing power figures would be a small gain for the outlay when just fitting a larger turbo and injectors and a remap would see it straight away.
There would be a gain on meth and a remap as I suspect at higher rpm where peak power is the extra ignition advance on meth would see a nice gain but more like 350 maybe 360 if lucky.
the vf48 works very well on the 2.5litre engine with avcs heads such as on the hatch back the vf48 originally came on, they dont suit the 2litre engine as well as you would expect... although still very nice to drive and 338/316 is respectable on your setup imho, I wouldnt expect you to see 360/370bhp on your setup with a vf48 although it is common occurance on the hatch sti.
Simon
Greater boost is mainly going to improve torque as the turbo will fail to flow more air at the higher rpm where peak power is, if you are running 1.5bar peak already - although I assume the apexi powerfc is controlling the boost whcih is only a simple one duty and one target; therefore there might be a small gain buy having rpm dependent boost control.
No mention of headers - ported or tubular may see a small gain.
An improved after market ecu like simtek or syvecs which both have rpm and gear dependent boost control would see gains in both boost control, power and torque and drivability with the faster processors and higher definition map allowing better spark and fuel control - however the gain is not really going to warrent the expense over the powerfc perhaps.
I think money spent chasing power figures would be a small gain for the outlay when just fitting a larger turbo and injectors and a remap would see it straight away.
There would be a gain on meth and a remap as I suspect at higher rpm where peak power is the extra ignition advance on meth would see a nice gain but more like 350 maybe 360 if lucky.
the vf48 works very well on the 2.5litre engine with avcs heads such as on the hatch back the vf48 originally came on, they dont suit the 2litre engine as well as you would expect... although still very nice to drive and 338/316 is respectable on your setup imho, I wouldnt expect you to see 360/370bhp on your setup with a vf48 although it is common occurance on the hatch sti.
Simon
Here is another bit of advice, when I had my green car mapped for the first time with a 2 litre lump
, vf28, headers & exhaust it was only running 320/300 but drove superbly. The engine went pop & I fitted a 2.5. Once run in it was astonishingly good to drive, virtually no lag & bags of torque. I should have stopped there, it was the perfect road car & the UK 5 speed was man enough for the job.
I wanted more, unfortunately wanting more costs exponentially more than before. Bigger turbo, injectors, better ECU, gearbox, clutch, props shaft, rear diff, linkage etc - that's 5k spent in the blink of an eye. Then your gearbox dies, ok you can replace it with another 5 speed for less than £500 but it's only going to last so long again.
Big power cars are awesome, no doubt. But in reality your 338 BHP is going to out accelerate almost everything on the road.
Best of luck & happy Christmas fella
, vf28, headers & exhaust it was only running 320/300 but drove superbly. The engine went pop & I fitted a 2.5. Once run in it was astonishingly good to drive, virtually no lag & bags of torque. I should have stopped there, it was the perfect road car & the UK 5 speed was man enough for the job.
I wanted more, unfortunately wanting more costs exponentially more than before. Bigger turbo, injectors, better ECU, gearbox, clutch, props shaft, rear diff, linkage etc - that's 5k spent in the blink of an eye. Then your gearbox dies, ok you can replace it with another 5 speed for less than £500 but it's only going to last so long again.
Big power cars are awesome, no doubt. But in reality your 338 BHP is going to out accelerate almost everything on the road.
Best of luck & happy Christmas fella
Last edited by DJ_Jon; Dec 26, 2011 at 09:07 AM.
Here is another bit of advice, when I had my green car mapped for the first time with a 2 litre lump
, vf28, headers & exhaust it was only running 320/300 but drove superbly. The engine went pop & I fitted a 2.5. Once run in it was astonishingly good to drive, virtually no lag & bags of torque. I should have stopped there, it was the perfect road car & the UK 5 speed was man enough for the job.
I wanted more, unfortunately wanting more costs exponentially more than before. Bigger turbo, injectors, better ECU, gearbox, clutch, props shaft, rear diff, linkage etc - that's 5k spent in the blink of an eye. Then your gearbox dies, ok you can replace it with another 5 speed for less than £500 but it's only going to last so long again.
Big power cars are awesome, no doubt. But in reality your 338 BHP is going to out accelerate almost everything on the road.
Best of luck & happy Christmas fella
, vf28, headers & exhaust it was only running 320/300 but drove superbly. The engine went pop & I fitted a 2.5. Once run in it was astonishingly good to drive, virtually no lag & bags of torque. I should have stopped there, it was the perfect road car & the UK 5 speed was man enough for the job.
I wanted more, unfortunately wanting more costs exponentially more than before. Bigger turbo, injectors, better ECU, gearbox, clutch, props shaft, rear diff, linkage etc - that's 5k spent in the blink of an eye. Then your gearbox dies, ok you can replace it with another 5 speed for less than £500 but it's only going to last so long again.
Big power cars are awesome, no doubt. But in reality your 338 BHP is going to out accelerate almost everything on the road.
Best of luck & happy Christmas fella
i agree craig,the way my type r is geared.......yes it does accelerate extremely well,i just thought if i get a set of bigger injectors i might see some more gain without blowing the box for imo very little outlay.
i may just leave it at that then,i just cant stop thinking my motor is good for 400bhp+,and im not running anywhere nere that,i know of a guy running just short of 400bhp and 390lbft and has done for 3 years on the same gearbox with numorous drag strip runs with no probs,(mine would probably go bang tho lol).headers etc are standard but seems an expensive route for very small gain.
not sure what to do tbh?
550cc injectors will mainly add safety and scope for future, plus allow extra headroom to allow you to have it mapped with meth in the tank also.
Greater boost is mainly going to improve torque as the turbo will fail to flow more air at the higher rpm where peak power is, if you are running 1.5bar peak already - although I assume the apexi powerfc is controlling the boost whcih is only a simple one duty and one target; therefore there might be a small gain buy having rpm dependent boost control.
No mention of headers - ported or tubular may see a small gain.
An improved after market ecu like simtek or syvecs which both have rpm and gear dependent boost control would see gains in both boost control, power and torque and drivability with the faster processors and higher definition map allowing better spark and fuel control - however the gain is not really going to warrent the expense over the powerfc perhaps.
I think money spent chasing power figures would be a small gain for the outlay when just fitting a larger turbo and injectors and a remap would see it straight away.
There would be a gain on meth and a remap as I suspect at higher rpm where peak power is the extra ignition advance on meth would see a nice gain but more like 350 maybe 360 if lucky.
the vf48 works very well on the 2.5litre engine with avcs heads such as on the hatch back the vf48 originally came on, they dont suit the 2litre engine as well as you would expect... although still very nice to drive and 338/316 is respectable on your setup imho, I wouldnt expect you to see 360/370bhp on your setup with a vf48 although it is common occurance on the hatch sti.
Simon
Greater boost is mainly going to improve torque as the turbo will fail to flow more air at the higher rpm where peak power is, if you are running 1.5bar peak already - although I assume the apexi powerfc is controlling the boost whcih is only a simple one duty and one target; therefore there might be a small gain buy having rpm dependent boost control.
No mention of headers - ported or tubular may see a small gain.
An improved after market ecu like simtek or syvecs which both have rpm and gear dependent boost control would see gains in both boost control, power and torque and drivability with the faster processors and higher definition map allowing better spark and fuel control - however the gain is not really going to warrent the expense over the powerfc perhaps.
I think money spent chasing power figures would be a small gain for the outlay when just fitting a larger turbo and injectors and a remap would see it straight away.
There would be a gain on meth and a remap as I suspect at higher rpm where peak power is the extra ignition advance on meth would see a nice gain but more like 350 maybe 360 if lucky.
the vf48 works very well on the 2.5litre engine with avcs heads such as on the hatch back the vf48 originally came on, they dont suit the 2litre engine as well as you would expect... although still very nice to drive and 338/316 is respectable on your setup imho, I wouldnt expect you to see 360/370bhp on your setup with a vf48 although it is common occurance on the hatch sti.
Simon
im selling a simtec with al & lc for £700 that will fit your car and you will get £400 for your apexi, and i can tell you there is a world of difference between the two in terms of power delivery and smoothness..
im in same boat my vf23 is not making good power so upgrading just brought some gt spec headers gonna get a harvey smith up pipe and 20g i think lol. i no may b mad but there been people driving good few years on early dccd boxes at this level been fine some havent .
but then again like dj jon said 340 classic is quick car faster than most and reliable what to do what to do lol
but then again like dj jon said 340 classic is quick car faster than most and reliable what to do what to do lol
they are at 96% i believe.does anyone know roughly what gains will be achieved with just upgrading inj to 550s?
we managed to push my 440`s to 352 bhp with a simlar spec to yours (tdo516g&fpr) amazing figuers for the spec, as for the 550`s there may well be more to come from them with a map,.