Did a rolling road day with the gtiroc club on Saturday and thought you'd be interested in the results 
The graphs below are in flywheel horse power based on measuring the transmission losses which are obvious very high on a 4 wheel drive car approx double what you'd see on a fwd or rwd car.
The cars spec is:
Hks 264 step 2 cams
standard pullies and springs
standard head
hks 86mm forged pistons
hks 1.2mm headgasket
hks s40i plugs
evo 6 fmic
hiteq fuel pump
sard 700cc injectors
apexi s-afc11
apexi itc
Z32 maf
standard exhaust manifold
standard dump/J pipe
Jgy bb37r turbo
mongoose exhaust turbo back with 2.5"
wizards of nos 100i kit with 50bhp jets
ap racing organic clutch
21psi/1.45bar boost
98 ron pump fuel
15 degree base timing backed off 2 degrees at 7000 rpm just to be on the safe side
Also the engine is pretty knackered tbh as it blew up about a month back and i've just bodged it back together until I can afford to repair it properly :redface:
anyway heres the graphs.
http://uk.msnusers.com/_Secure/0QQA...XvGWWTqXYSJI/power.jpg?dc=4675465214076482666
http://uk.msnusers.com/_Secure/0QgA...uBCCj72GgDU/torque.jpg?dc=4675465214082845581
The black line is with a 50 shot of nos added for good measure lol and the blue line is the no nos run, also the engine hit the rev limiter before the power tailed off on the no nos run so its possible there was still more to come?
I feel that the standard manifold and more importantly the standard J pipe and 2.5" exhaust would have been holding back the engine quite alot so it will be interesting to sell what sort of difference a decent J pipe and 3" exhaust will make to it at a later date.
Also on the same day a friend with a JGYBB37 fitted to his car (gtir again)put out 390bhp at the flywheel with pretty much the same spec apart from he had standard cams but with a ported head.
I feel on a fwd or rwd car you'd be seeing around 350 wheel bhp at 20psi (98 ron pump gas) with these turbo's and probably abit more with decent J pipe and 3" exhaust? some decent mapping wouldn't go amiss either :redface:
The graphs below are in flywheel horse power based on measuring the transmission losses which are obvious very high on a 4 wheel drive car approx double what you'd see on a fwd or rwd car.
The cars spec is:
Hks 264 step 2 cams
standard pullies and springs
standard head
hks 86mm forged pistons
hks 1.2mm headgasket
hks s40i plugs
evo 6 fmic
hiteq fuel pump
sard 700cc injectors
apexi s-afc11
apexi itc
Z32 maf
standard exhaust manifold
standard dump/J pipe
Jgy bb37r turbo
mongoose exhaust turbo back with 2.5"
wizards of nos 100i kit with 50bhp jets
ap racing organic clutch
21psi/1.45bar boost
98 ron pump fuel
15 degree base timing backed off 2 degrees at 7000 rpm just to be on the safe side
Also the engine is pretty knackered tbh as it blew up about a month back and i've just bodged it back together until I can afford to repair it properly :redface:
anyway heres the graphs.
http://uk.msnusers.com/_Secure/0QQA...XvGWWTqXYSJI/power.jpg?dc=4675465214076482666
http://uk.msnusers.com/_Secure/0QgA...uBCCj72GgDU/torque.jpg?dc=4675465214082845581
The black line is with a 50 shot of nos added for good measure lol and the blue line is the no nos run, also the engine hit the rev limiter before the power tailed off on the no nos run so its possible there was still more to come?
I feel that the standard manifold and more importantly the standard J pipe and 2.5" exhaust would have been holding back the engine quite alot so it will be interesting to sell what sort of difference a decent J pipe and 3" exhaust will make to it at a later date.
Also on the same day a friend with a JGYBB37 fitted to his car (gtir again)put out 390bhp at the flywheel with pretty much the same spec apart from he had standard cams but with a ported head.
I feel on a fwd or rwd car you'd be seeing around 350 wheel bhp at 20psi (98 ron pump gas) with these turbo's and probably abit more with decent J pipe and 3" exhaust? some decent mapping wouldn't go amiss either :redface:
