That does appear to be a VR6 - mine was a 1.8T. Perhaps that's why there's gets to 310, and mine only got to 275. However, most of the parts they're mentioning are the same pieces (although they might not actually be the same parts - tuned for the VR6 instead of the 1.8T?) When I said that I installed it myself, I should have qualified that - me and my friend Dave installed it, and he knows much more about these kind of things than I do (although I wouldn't condsider myself an amateur). I can't however find my old kit on their site (I bought my kit in 01), so I don't have the exact one to point out. In any case, the final compression (according to Dave) was not 8.5:1, but 10.3:1 (I was taking the numbers off the site). I'm sorry for the confusion.

 

... All these numbers flying around... thats why I switched from Engineering to Political Science... :lol:

Okay... so superchargers or Turbo's can NOT go on our stock engine... but what about rods, pullies, air flow, exhaust, even tires have to give us some advantage! What can we do to increase the speed of our Crossfire without endangering our beloved...

too me it seems that that plastic piece under out from grill could be removed and put in place a real metal one with TRUE holes in it... wouldnt this allow our engine to run cooler saving the life time on the engine?

Anyone seen the Borla exhaust yet? ... shouldnt removing stock exhaust allow more airflow and increase speeds slightly? if not at least adding sound...

I don't know much about cars... but i enjoy learning! there has to be some people on here that have custom built cars ... it just doesnt seem possible that our car is at its limit...

 

You could take the exhaust off completely from the header back. That would give you about 20 whp, but you'd melt the header welds and your car would sound like a garbage truck in a bad way.

And run with an open throttle body. As long as you don't suck in a bug you'll be fine.

:roll:

 

Ive read all the cross chatter on super chargers ,If you need the speed buy the factory SRT, because it's not just acharger in the package !Plus resale value will be better on a factory car than after market crap,if you have a neese car who cares!

 

ditto :lol:

 

:lol: :lol: :lol:

 

You can't honestly think that you would melt the welds:? Come on, man... I'm not trying... HONESTLY.... to find fault in what you are saying, but when you say something like this I can't sit quietly. I'm really not picking on you.... :cry:

Exhaust heat is not going to melt anyones welds if the headers are uncorked... You are right when you mention the noise. The other problem would be the extreme heat (but not enough to "melt the header welds") on the floor pan. Might do some serious damage to the carpet and padding.

 

It was mostly hyperbole, but I do believe that unmitigated 4000*F exhaust temperatures will do quite a bit of harm to the manifold.

 

There would be a definite benefit in replacing the factory catalytic converter with an aftermarket less restrictive cat. However, the decrease in backpressure (from less exhaust restriction) may negate the benefit. Only testing would tell for sure. I have an offer from a local shop to so do to my car (1/2 price to be the guinea pig), but I'm hesitant to do such an extensive mod while the warranty is still in effect.

 

No, that's fallacious. An engine does not need backpressure. Carburetor equiped engines benefited from backpressure, but on current, computer controlled cars you want as little backpressure as possible.

http://www.uucmotorwerks.com/html_pr...torquemyth.htm
and
http://www.automotivehelper.com/topic13199.htm

What you're probably thinking of is exhaust scavenging, which is a brief moment of vacuum around the exhaust manifold area as the exhaust ports close. This increases torque slightly because it pulls air through the engine, but this is very different from backpressure.