This is a direct quote off stillen's web site,
"It should not be used with automatic cars that have the STILLEN supercharger fitted." Why is that? Anybody know the side effects if a stillen y-pipe is used with the supercharger? Will a different y-pipe be needed or do I need to go back to stock once I get around to buying the supercharger? If anybody has any ideas, get back with me! Thanks!

 

probably because they don't wanna be held liable for anything, including not passing smog checks even tho u have CARB sticker, or scared that itll damage the clutch or tranny, or whatever stillen was smokin at the time.

 

I noticed that you have don's VB mod and was wondering what your feedback was on it.

 

works great, a must if yer boosting. i forsee my tranny going anyways, but it should be extending the life of my tranny.. that and the slow way i drive unless provoked i just like to cruise along and enjoy my music lately.

 

It's just because the stock tranny is already pushed to the limits w/ the SC. And the Y-Pipe only makes things worse. I have the SC w/ 3.33 pulley, and Stillen Y-Pipe, and 2.5" exhaust. The tranny doesn't like me very much now, but it hasn't blown up yet. I have the VB mod in my living room right now waiting to go in within the next few days. Don't worry, just get the SC.

 

Ha-ha, I asked the exact same question. Adam at Stillen just said it was too much power for a stock maxima automatic transmission. I think he said some guy sued them once so that's why. I was a little nervous too when I read that but I'm going to buy the y-pipe anyway probably. Don't worry too much about it.

 

one more question, if you can get away with keeping the y-pipe as long as you get don's vb mod (which I will have before I boost), is there a way that I could keep my underdrive pulley? I know that the supercharger gets it's power to run from robbing the engine of a little to give it a lot, something like the supercharger really makes like 80hp but you only receive like 50hp because it takes the other 30 to run it? I dunno for sure, but I guessing since the pulley is already robbing power from the accessories then, with the SC things just go all to hell? If you know anything that could answer this, I would appreciate it. Thanks guys!

 

Ha! You totally remind me of myself. I asked all these questions as well. This one I can't tell you why, technically speaking, all I can say is EVERYONE I speak to tells me no. All I can think of is you aren't only robbing the AC, etc. of power, you're robbing the SC as well. Perhaps the losses exceed the gains? I don't know. Hopefully someone can answer you with a real answer. I just thought I'd pass on to you that I have looked into this and my results were a unanimous no. Good luck.

 

Can't keep that pulley, it's robbing you of boost. It slows down all of the accessories by driving them slower, but your SC is run off of these same belts. So if the accessories are being driven slower, so is your blower, and you're boosting lower than you would otherwise.

 

You should be fine with the y pipe. Definitely get the VB before the supercharger.

 

But what if one were to get a lighter pulley just not a smaller pulley? There would be a gain there, correct? Theoretically?

 

Yes. You'll rev up faster.

 

Is getting a lightened flywheel for a S/C'd car the same concept as this?

 

For a manual, yes.

 

Thanks

 

Isn't a flywheel irrelevant to a SC? Do you mean the actual SC pulley?

 

No I meant the actual flywheel. Its relevant, but unfortunately I don't know exactly how a lightened one would help. (other than the fact that less rotating mass always helps out)

 

according to maximadriver.com .....you need the stock pulley for the SC

 

I know that I need a stock pulley, I was just asking if anyone had reasons why. And from what Shadow said, it makes since. So, pretty much, you could keep the underdrive pulley, but you wouldn't have the hp gains from the SC compared to the gains with the stock pulley. This all helps. Thanks again

 

Right, I'm not questioning that it helps. I just don't see what a supercharger has to do with it. Aren't the gains/benefits the same with or without the SC?

 

Gotcha. I'm actually not sure which would give better benefits.