Quote:
Originally Posted by Mungo
Has anyone checked out ststurbo.com to see what they've been doing for us GM guys. They have a twin turbo kit that doesn't go under the hood. It replaces the mufflers, and the boost is variable between 5 - 7psi. Just a sweet setup.
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I've not seen a TT kit, but I made a video for a single-turbo Formula a year or so ago.
And this video also gets me started on the turbo-lag point made:
http://www.merfproductions.com/vids/whistler2.wmv
First and foremost, your average street turbo will not have any noticeable lag. You don't start having lag problems until you get into a turbo that is rediculously oversized for the application...namely huge drag-racing applications that would be laughable on the street anyway.
Secondly, there's a slight advantage to NOT having all the power instantly available...namely traction. Even if you have an ideal suspension and tire set-up, it's pretty unlikely you have the freedom to release all the power right off the line, you have to have some level of feathering. So using that as an argument against turbos in drag racing is a bit silly. Road racing (I.E. Autocross) really is a place where a turbo wouldn't be the best set-up to have, but again it's plenty usable with the correct set-up. I'll use this opportunity for another cheap plug of my videos, and my old car (large single-turbo Supra doing autocross:
http://www.merfproductions.com/vids/autox.mpeg)
The big argument with the STS kits, like the one in my video above, is, "OMG ALL THE PIPING EQUALZ HEATZ LOSSSESSS AND LAGGG!!111!". Which I was pretty sure the physics of it all would prove to be true myself, until I saw it in action. Ok, maybe there's some lag...but it's so minor, why worry about it? That's a fairly large T76 turbo under the ass of that Formula (LT-1 stroked out to 400-something CI), with many feet of long piping and an intercooler, and you can hear that he is hitting full boost (15-18 PSI) at the 60'.
Cliffnotes: Lag is almost laughable it's so overrated. Proved by the video which shows a set-up that undergoes more scrutiny than any other for causing lag.
