Want More Power

[rob82]

I tuned an ED 4.0l with a blocked cat today 78rwkw to 162rwkw.

[Al]

Hey skyman (sorry forgot your name),

Met you last Friday at the Calder Park drags, i have the red perl 33 with charcol rims.

At what rpm are you experiencing knocking?

Looking at you graph, i would say that it is pretty strong, it may have not reached the 250 mark, but i wouldn't be disappointed. Was the turbo brand new? Where did you buy it from? There are so many cheap Chineese products out there, that is currently flooding the market.

Hope to catch up at another Calder Drag Day.

[Tommyk]

i reckon your turbo is holding you back. more boost means its pushing more (hot) air into the engine. then you get more detonation. its probably out of its efficiency range.

Dont worry about the numbers. just make sure it is nice to drive

[skyman]

Hey skyman (sorry forgot your name),

Met you last Friday at the Calder Park drags, i have the red perl 33 with charcol rims.

At what rpm are you experiencing knocking?

Looking at you graph, i would say that it is pretty strong, it may have not reached the 250 mark, but i wouldn't be disappointed.  Was the turbo brand new?  Where did you buy it from?  There are so many cheap Chineese products out there, that is currently flooding the market.

Hope to catch up at another Calder Drag Day.

<{POST_SNAPBACK}>

hey al...

the turbo was 2nd hand off a mate who had it for less then 2 months

its an AVO bolt on costing 3100 brand new!!! i didnt pay that much got it for 800 with dump he's main bearing went so he upgraded hens cheap price

and i am happy with how the car runs, nice and smooth without much lag would just like a lillte more not too much to ask for is it!

might go back in 2 weeks, but got to remember how to drive !!!!! LOL

Karl

[paulr33]

paulr33 if it is the exhaust how much are we talking about

i thorght 3'' with hiflow cat was good to 300rwkws

and skyman wat did your tuner say wat would he recomend

and wat ebc is it on the pfc and are they a good bc

james

<{POST_SNAPBACK}>

3" you may find will be a restriction around 250rwkw its hard to say. it depends on the turbo a/r and the engine as well and how it flows (ie: lots of things). boost is a restriction to air, if you take away the restriction (aka larger exhaust) it can flow more air at the same boost pressure, and thus make more power. as more air being moved around makes more power. if he does find that dropping the exhaust gives him another 20rwkw odd ish then i woudl suggest looking into a 3.5" split dump/front pipe combo and a bigger cat, at least as a start anyway.

i dont think 3" is good enough for 300rwkw you can certaintly make that power with it (well i think anyway) it will just have stacks more backpressure and resistance. it would be much wiser to take away the resistance and make the power "easier" then causing lots of backpressure.

the powerfc boost controller kit uses the apexi avcr solenoid but different controller module / unit

[Al]

I have seen rb25's with 3" exhaust make well over 300rwkw without any issues. Are you talking from experience Paul (ie:seeing it first hand) or from what ppl say on the net?

[paulr33]

nah just from forum speak, i always thought it was too small

[race_snooze]

i have seen to4's make into the 340rwkw mark with stock manifolds, so thats not your problem, fuel pump? fuel reg? try a new tuner?

[Col-GTSX]

I made almost 300rwkw with out cams... but once cams went in it jumped and was far more driveable... No stuttering or loss of power through the revs...

fpr and fuel pump are a must to go over 250rwkw... For safty reasons...