Thread: Think I went with too big of a turbo...

He already has the standalone. I told him to re-pin the harness



Great looking manifold.

Like Blair said I do already have it. If JKTuning wasn't releasing the NEMU boards, it would be in the car already. I'm kind of tempted to wait for the NEMU boards and try those out.

Also people with the same mind set told me to buy the basic, no one needs a Real Time. To this day I'm happy I spent the extra $300 on a RealTime.

that flange is prolly causing am issue, creating some turbulance in the merge collector...might want to port that and match it to the collector

Yeah I already did that. These were pics of the (almost) final build. I took a grinder bit to that area and made it the same size as the turbine inlet with a template I made.

Huge torque, yes. Huge powerband, not so much. Pay attention to the scaling. That graph starts at 4000rpm, torque peaks at ~5000rpm, and the graph ends at ~7100rpm. 2000rpm-wide powerband is not so huge.

But, way more power than I made, so kudos!

Vadim: how'd the single cam only test go? I'd try intake only first on the butt dyno, as I think that's where it will make the most power. This, obviously, is just a guess.

Ya, looking at it like that my powerband is larger. But still, if revs were kept up I bet it would stay over 500whp for another 1krpm or so. So If he revved out to say, 8500rpm, he would prob still be making 475whp. That is a 4k rpm powerband. Not bad for the size of turbo which tends to be kinda peaky.

I peak torque at 5000rpm, but rev out to 8800rpm. 8800rpm is kinda pointless, but it allows me to hold it in the gear in corners without bouncing the limiter and upsetting the car. I shift when it feels right

I did the exhaust cam only for a bit, butt dyno not too impressed. Then today I did intake cam only, butt dyno even less impressed. Unplugged the cams completely and butt dyno became happy again. . To put it in perspective of how exhaust and intake cams only were unimpressive is I stopped getting wheel hop in first gear.

Remembered that I shouldn't rev too high on low lobes (no idea when valves start floating on low cams). Plugged both of the cams in, and set the VVL switch point to 5k and will try that tomorrow.

His setup and turbo size he was using would have made power to 10k if he reved it out to that far but again it was a stock internal VE motor not a fully built one. The turbo and turbine housing he was using was huge. It was basicly like a BW 372 compressor with a large as hell turbine housing. His backpressure levels were way under his boost levels. That turbo would have flowed and made power to well past 10k if he chose to rev it that high.

His powerband was short only because thats what he chose to rev it to.

Thats why im going with the turbo and turbine housing that i chose because I want a powerband from 6k to 10k and keep backpressure lower than boost which it should flow more than enough to do so.

i went with vadim today to help him pick up his new turbo..



that should get the job done!