Single Turbo Conversion. What Power Do You Think I Should Be Making?

[asps91]

just to clarify there is nothing at all wrong with the tune, extra timing didnt make any more power.

[Guilt-Toy]

whats wrong with 350kw anyway ? thing should hammer.

[asps91]

Nothing's wrong with it at all. It goes pretty well.... But there is always room for a bit more power.

[Blackkers]

yes but if you wanted 350rwkw you could have had a much smaller and more responsive turbo. and who doesn't want to maximise their setup

Something must be wrong if others are making more power with less boost on 98. I'm not convinced that cams would be the only issue here

[hypergear]

Probably an good idea to see what other cars are making using the same turbo at Jez's dyno. At this boost level is about at the point of which turbo will not be making any more power per additional psi of boost added. I usually see 400rwkws E85 on this turbo by this sort of boost level.

[Dale FZ1]

Agreed. Speak to Jez, he tuned it and should know what to expect.

This is a GTR so the awkW figure is going to be lower than the rwkW figure due to parasitic losses.

Not a whole lot of point throwing stuff around on a forum when you can get an opinion from the person who's actually produced the tune.

[Dose Pipe Sutututu]

That car was run in RWD mode, i.e. front output shaft pulled off I would have imagine (because R33).

[methz]

look into a set of camtech cams, good gains. im making tad more power with less boost and smaller turbo

[asps91]

What model camtech cams did you go for methz? I was actually looking at a set of these.

[methz]

camtech 272 9mm lift drop in, I asked for vct to be drilled into intake as I wanted to keep my vct and it worked out good. picked up 45hp same boost nothing else changed.

[NYTSKY]

^^^Where was the gain, mid range or top end?

[methz]

mainly top end, motor revs a little harder now, peak power was around 6400 now its 7200. turbo is more then likely too small for the cams tbh,

[asps91]

I did a compression test last night just to make sure everythings ok. 150-155psi through all cylinders while engine was warm.

Edited April 8, 2014 by asps91

[Dale FZ1]

Have you got any comments from your tuner? ie are you looking for a "problem" that might not exist, purely because a certain number did not appear on a piece of paper?

Previous posts indicate that all the bits are well made and there are no leaks, so if compression is right, AFR is right, and it's taking a decent whack of timing then perhaps it's time to run it down the strip and see what trap speed it can pull as the best indicator of power.