Quote:
Originally Posted by Montecarloman
I agree that heat is the major drawback of any roots style blower. The great part is the LSJ intake manifold has a built in intercooler. There is a dual pass end plate offered for the manifold which should aid with cooling the intake charge. However I have not seen or heard how well it works. What I do know is its standard equipment on the race Cobalts so it’s got to do something. I also agree that initial cash should be spent on traction modifications simply because if you can’t put it to the ground, what good is it to you. Here’s where I'm going to disagree ever so slightly. People have ported and polished there blowers and do see increases. A larger TB would not be a bad idea if you’re going for big numbers.
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The dual pass IC is good for about a 10 degree drop in IAT2s, which is significant. Also porting and polishing does do some good but it also helps drop your charge temp which is where some of the gains are coming from. I still don't think the restriction is in the snout however. I'd also have to say that by the time you have gotten around to having so much hp that you need to upgrade the throttle body you are WAY past the efficiency range of the superchager. The stock TB is very capable of flowing all the air the M62 can effectively use.
So again I'd say the TB upgrade is fairly useless.