> With such a small turbo, i should be in boost almost all the time im driving. it should hold good til redline aswell.
Not gonna happen.
A T25 will have about 2-3000 rpm power band
A T28 will be better till redline but spool a bit later.
Listen to what Luke's been saying.
> Im still pretty firm on the T25G, im sure the GT28R would be a huge improvement
All of us fooling with d16's are doing it due to budget reasons.
The GT28 is a new unit and thus $$$$.
Any second hand T28 will be nice.
Small frame T3's (45 or 50trim is perfect), or Nissan R32/33 GTR turbos will be at the very top end of your goals.
SAAB T3's are supposed to be cheap and might be worth looking in to.
The smaller turbos off WRX's would probably be nice, but I've only researched the Garret series.
> Do you suggest getting a cat from a V8 commo, or would a V6 cat work just as good? What ever fits the pipe you going use.
Late model vehicles tend to have higher spec cat converters. As long as it's sized appropriately it'll do the job.
> Id much rather use mandrel bends for the exhaust,
That's a lot more money.
A good down pipe to your current exhaust system should be plenty.
> so i would get full boost about just under 3000RPM
I think this is optimistic.
Perhaps one of the variable vane Garret turbos (GT2056v) is more appropriate for your goals?
Mercedes sprinter diesel vans and nissan 4x4's come to mind.
Nick.
PS. I think the T25 is perfect for your original goals, just your expectations are a bit optimistic.
A T28 will probably start to max out the integrity of the motor and need more cash spent on the exhaust, etc.
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