LIMITING POWER FACTOR
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I have a 97 JAP STI with the following mods:
STI8 bottom end
TD05
Apexi PFC
Full 3" Decat
4 Maps 0.9, 1.1, 1.25 & 1.4 bar.
At 1.4 bar I made 310bhp and 280 lb ft
I thought I would make more than that that so i was just wondering where the limiting factor is likely to be. All mapped on the RR so fuelling with optimax + booster etc spot on. I was thinking maybe headers but any advice appreciated.
Cheers, Paul.
STI8 bottom end
TD05
Apexi PFC
Full 3" Decat
4 Maps 0.9, 1.1, 1.25 & 1.4 bar.
At 1.4 bar I made 310bhp and 280 lb ft
I thought I would make more than that that so i was just wondering where the limiting factor is likely to be. All mapped on the RR so fuelling with optimax + booster etc spot on. I was thinking maybe headers but any advice appreciated.
Cheers, Paul.
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Definately intercooler, if youre running std go bigger but bear in mind that your car will always make more power on the road sue to the massive airflow that goes through the IC, rolling road setups just cant replicate this.
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i think headers would help, mine is a 95 wrx running 303bhp/325ftlbs on standard IC,standard injectors and standard fuel pump, mods are full magnex decat,megan headers,scooby ecu chip cheers mark
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lol, ok mate tell you what next time you go to a rolling road put your hand in front of the fan, then put your hand out of the window at 7k rpm in 4th on the road, and you'll see what i mean.
Trust me i work in engine testing, rolling roads are ok as an indication, but they arent a true representation of real-world driving conditions, hence why many mappers prefer to map on the road.
Trust me i work in engine testing, rolling roads are ok as an indication, but they arent a true representation of real-world driving conditions, hence why many mappers prefer to map on the road.
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Thanks, for the replies. Already have an uprated fuel pump. Would i need a fuel pressure regulator at this level of tune. Think it will be:
1. Intercooler
2. Headers
3. Injectors
Just have to get the pennies together.
Paul.
1. Intercooler
2. Headers
3. Injectors
Just have to get the pennies together.
Paul.
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My 2.5 was producing around 320/320 before i changed the tek3 to an apexi. The only mods at the time were a full decat and vf23 turbo. Running at a conservative 1.2 with 1.3 overboost. I would have thought you would achieve more with the td05. Your mapper should be able to tell you though if the fueling/air flow is restrictive and advise accordingly.
Trems - if i were at 7k in 4th i'd be reaching for the gearshift, not the window switch...
Trems - if i were at 7k in 4th i'd be reaching for the gearshift, not the window switch...
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BOB'5 >
I work with a female calibration engineer (which is fundementally 'mapping'), but we do O.E stuff not aftermarket if that makes a difference.
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Originally Posted by Bolton
Just an aside to BOB'5 comment.
Has anyone ever met a female mapper ???
Has anyone ever met a female mapper ???
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