Question--> Expected power?

[Robo]

Hi There,

Currently I have a fairly stock R33 gts-t, mods:

Boost - 9psi

K&N pod

Front Mount I/C

Oil/Air seperator

Last run on a dyno gave me 164 rwkw's.

I'm looking at getting an exhaust...

Firstly what is an expected increase in kw's (roughly)from fitting a new exhaust system?

Secondly I do not want a noisy exhaust (just a nice note), does this mean I go for 2.75" or a 3" pipe?

Thirdly, It seems I can only afford an Cat back system (for now), what type of power will I get exrta from a front pipe and dump?

Thanks for your help.

Ps. What does everyone think of the 2nd hand jap exhaust's?

[hippy]

nothing wrong with second hand jap exhaust ... but some people think that aussie stuff is as good or better ... your choice

[Guest INASNT]

well i got

full exhaust + custom dump pipe

hks fmic

s-afc

K/N Pod

and i made 165kw@wheels at 0.5 bar and 183kw@wheels at 0.9 bar just a few days ago!

And i got a custom made oil/air seperator going in but that wont give any more power just keep nasty oil vapour out of the intake!

[benm]

Just as a guide:

'95 GTS-T, 65,000km

Cat back 3" exhaust

FMIC

HKS Pod Filter

2 Stage boost controller

Stock ECU

168rwkw @ 7psi

192rwkw @ 12psi (minor pinging)

I've been told by many people that the most restrictive part of the exhaust system is the front section. Im thinking of getting that done next and then a PowerFC.

Hope it helps...

[Guest INASNT]

benm

do u have the dyno graph to post, i would like to see the a/f atios u r getting with the stock ecu. (i am sure your is chipped or been tinkered with) cause the stock ecu runs so rich it could not ping!

[meggala]

hey inasnt congrats of the figure that is awsome and on the low reading race pace dyno see hmmmmmm I'll have to think b4 I run you now . but what impresses me most is your low boost figure thats great

meggala

[benm]

Here is the scan of my dyno graph. I've noticed down the bottom that it was done in 'shootout mode' i have no idea about this sort of stuff but maybe it makes my figures higher or something.

Although i did get dyno'd with 20 other Skylines.

Dyno Graph

I believe the reason for my pinging (only noticable by the dyno guy with a headset thingy on) was coz i was using 95RON fuel and 10,000km old oil. (Both since changed) and it was also the 1st time i had used 12psi in around 12 weeks.

[Guest INASNT]

meggala

i will run u any time mate!! and yeah i wanna run mine on another dyno an see what i get. But it good to know race paces dyno reading are genuine unlike others!

Benm

Shootout mode is not normal and varies sumway!

and from your graph your comp must b chipped as your a/f ratios dont look factory otherwise they will be round the 10.0 mark!