^ I would honestly agree that a well tuned boosted S2K is more reliable.

 

Good thread this!

Must say, i'm with 05turbo here - Limiting the torque is a good way of retaining the life of the engine.

I mean for a DD, a 50% power/tq increase is surely enough...right?

300whp in a 1250kg car, plus total reliability?

Sounds good to me

Sure, if you have the money, go for the big boost and buy a new engine/rebuild when it wear out in less than 10k miles.

Personally, at $4000 for a used engine, I can't afford that!

 

i wouldnt be so worried about the engine. thats one of the strongest parts of the car

 

50k+ miles here with boost and definitely not a low power setup. Compression numbers have been the same since i started measuring them, however i think some compression is lost in the first or second crank when the motor is cold as it takes a few more cranks to start than other cars tuned by the same tuner. That being said i made the exact same power as other big horsepower people on this site, on the same day, same dyno, within 20 minutes of each other, so im guessing my motor still hasn't lost it yet! My diff on the other hand is another story!

If you want to cut down on cylinder pressures invest in a well made tubular manifold. You'll make as much power as a log at a lower boost levels, while making alot more midrange torque!

 

there are a lot of factory turbo cars these days....

 

^ also to add to what "soul coughing" said, a equal length or at least long runner will help to keep those exhaust gasses from being pulsated right back into the cylinder, they should help with detonation and a cooler EGT...

and of course POWER!!!!!




^ by the time you're taking advantage of that it's time to be looking for....
R200 FTW!!!!

 

 

Your missing the whole point, one of the big factors which has already been greatly stated and explained was how making more boost at a lower rpm is far more taxing on a F20 then at high rpm. You should resurch why that is so you have some better understanding of what you are diving into with these modifications.

I like your argument about the SC expending more energy to drive, putting more stress on the engine, that sounds like something someone pulled out of their ass. This is not some 6/71 v8 blower. Its a centrifugal blower, cmon man get a clue. The blower if you have ever turned one by hand without a belt will tell you there is vertually no resistance at all, its like spinnig an over sized skate board wheel. I will tell you that the air conditioner on our car provids much more resistance to the engine then a SC. hahaha

 

To answer the original question 25 pounds here, 3mm HG, stock internals. Dyno in sig.

 

Again to the OP..... like Mase said..... don't use PSI as a rating system at all. It makes no sense on it's own. Manifold...turbo...intercooler...CR....etc.etc.etc . all change things.