Clown

How do you like the Vitesse setup? Do you have the piggyback fuel controller or just the maf and chip? What kind of numbers you running now? I plan on maf, and the usual mods for mine. Shooting for 400

TurboTommy

I guess you sincerely assume that I've had this exact turbo in the past.

No, but powerhaus k29, wheel sizes almost the same(didn't measure to the tenth of a millimeter): creeping up to 40 psi cross-over exhaust pressure at 17-18 psi boost in the upper RPMs on a 2.8l stroker-----and that was a #10 housing.
There are, however, other factors that contribute to back pressure; not just the turbo.

It would be great to see your info of turbine inlet pressures and/or dyno charts from "guys who have made more than 400 rwhp with stage 3 hotside".

Rogue_Ant

No I was being a little bit facetious.

And if your basing your info on KKK stuff, then I understand your doubt. However, there is definitely more to it then just wheel size... The KKK turbine wheels are really old technology.

As for the 400rwhp, I really don't care to argue - lets just agree to disagree.

David Floyd

The Vitesse products work great, I do have the piggyback, but actually have never used it. The tune is very good from the chipboard (conservative)

I dynoed at 340/360 @17 psi, there is plenty room left for tuning as I could feel the timing being pulled at the end of the run.

400 rwhp at 20 psi or less and full boost by 3200 rpm has been my goal. Pretty sure with the Vitesse cam I have now and a fine tune the 400 rwhp is a done deal, just need to drop the spool time and while I know it my not be possible to have both it something to work toward.

TurboTommy

No kidding

You're a pretty smart guy, and probably rennlisters value what you say.
So, I'm surprised you'd just ***** nilly throw out info based on "guys have made more that 400 whp with a stage 3 hotside"
So somebody else comes on here to share their knowledge and findings; you take it personnally and then start playing games with me (which, of course, I knew you were doing all along).

Rogue_Ant

As I said, we disagree - don't make it out to be more then what it is.

But I guess my point didn't come across clearly...
Different turbo combos will yield different results. And making a blanket comparison based purely off of inducer/exducer size is inaccurate at best.

Additionally, Like you, I value real-world data - like what you posted earlier. I think that sharing of data is something that has been missing from this community.

refresh951

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refresh951

Just for the record, I made 409 hp with a stage 3 compressor wheel and a #8 hotside