the APR s3 gt25? does anyone have specs for it? how much hp does it support?
03-23-2004, 05:15 AM
#5
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on that site a gt28r is rated to 280hp max, but ->
I have a turbocharger I'm pretty sure orgins from a transverse APR s3 kit. (got it used)
With this turbo I manage to pull above 300gr/s. That is about 530cfm...
Have not dyno'ed, but I'm pretty sure its WAY past 280chp...!
I'm having trouble with getting faultcode that MAF signal gets over range! (that is with a 76mm MAF-housing...)
VAG-com is reading 187gr before 5000rpm, but voltage still rises and @6000rpm the faultcode comes...
Jamez.
With this turbo I manage to pull above 300gr/s. That is about 530cfm...
Have not dyno'ed, but I'm pretty sure its WAY past 280chp...!
I'm having trouble with getting faultcode that MAF signal gets over range! (that is with a 76mm MAF-housing...)
VAG-com is reading 187gr before 5000rpm, but voltage still rises and @6000rpm the faultcode comes...
Jamez.
03-23-2004, 06:19 AM
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what year is your car?
I know in the drive by wire cars, 2000 and later, APR has the to rescale the MAF tables for the stage 3 kit. My MAF is maxed out at 215 g/s or so. This happens somewhere in the 6000 RPM range.
530 cfm would equate to 350 hp. Pretty sure that teh GT28 can make more than 280 hp on pump gas with some extras. I made 223 to the wheels on pump gas and 244 to the hubs on a home made race gas. This is with stock intercooler. With no cat, a downpipe that has a separator for the wastegate exhuast, nice FMIC I'm sure over 300 bhp with a GT28R is possible on pump gas. This is assuming proper tuning of course. Then you can add other little things like a power gaster for the intake manifold, water injection for a few more hp. A well heat shielded intake setup might get you another few as well.
530 cfm would equate to 350 hp. Pretty sure that teh GT28 can make more than 280 hp on pump gas with some extras. I made 223 to the wheels on pump gas and 244 to the hubs on a home made race gas. This is with stock intercooler. With no cat, a downpipe that has a separator for the wastegate exhuast, nice FMIC I'm sure over 300 bhp with a GT28R is possible on pump gas. This is assuming proper tuning of course. Then you can add other little things like a power gaster for the intake manifold, water injection for a few more hp. A well heat shielded intake setup might get you another few as well.
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03-23-2004, 08:05 AM
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car is an European 98, ndwb AEB ... 300hp max, maybe, but ->
But corrected airflow in my case IS approx 530cfm!
And also, I have tried my car with a G-tech meter. It showed up with 293whp...
That was before tuning, I was running WAY rich (afr 9:1!)
I've gotten it custom mapped now, running a bit sharper timings, and as good as perfect AFR...
I believe I could get noticable more than 291whp now... It feels much faster than before I remapped it!
Ill have to try the g-tech again.
We did not update the ecu readings for MAF. We only redid the load-tables (injection-values) and timings...
Like I said earlier. Ecu mafreadings stops at 187.7grams or so, but airflow/voltage keeps rising a bit further, and giving the faultcode.
Car is a 98 nDBW with AEB block, I have a schielded CAI, large FMIC, 3" dp/exhaust, no cat, running 98octan (eurofuel, equals your 93 I think)
Ambient temps here are about 35degrees F, and Im seeing intaketemps not much over that.
Guess Ill have to dyno the car to get real answeres...
Didn't a guy called DMAK here run much hp with an APR s3 kit? Or did he have a "3+" ?
Any dynoed stage3s with more than 300hp?
And also, I have tried my car with a G-tech meter. It showed up with 293whp...
That was before tuning, I was running WAY rich (afr 9:1!)
I've gotten it custom mapped now, running a bit sharper timings, and as good as perfect AFR...
I believe I could get noticable more than 291whp now... It feels much faster than before I remapped it!
Ill have to try the g-tech again.
We did not update the ecu readings for MAF. We only redid the load-tables (injection-values) and timings...
Like I said earlier. Ecu mafreadings stops at 187.7grams or so, but airflow/voltage keeps rising a bit further, and giving the faultcode.
Car is a 98 nDBW with AEB block, I have a schielded CAI, large FMIC, 3" dp/exhaust, no cat, running 98octan (eurofuel, equals your 93 I think)
Ambient temps here are about 35degrees F, and Im seeing intaketemps not much over that.
Guess Ill have to dyno the car to get real answeres...
Didn't a guy called DMAK here run much hp with an APR s3 kit? Or did he have a "3+" ?
Any dynoed stage3s with more than 300hp?
03-23-2004, 08:13 AM
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From 1/4mile traps on s3 A4 1.8Ts over there I believe many of the cars should be 350hp?
Most good final speeds are like 103-105miles, right?
Assuming car weight of 1500kgs/3300pounds,
that should equal about 295whp, from the calculations Ive seen for such...
(many around the web)
In that case I would believe the s3 turbo to actually deliever air to 350-370hp, and APR ratings to be very conservative??
Assuming car weight of 1500kgs/3300pounds,
that should equal about 295whp, from the calculations Ive seen for such...
(many around the web)
In that case I would believe the s3 turbo to actually deliever air to 350-370hp, and APR ratings to be very conservative??