View Full Version : Performance Increase from Plenum

09-13-2002, 01:45 AM
Anyone know the performance boost in just adding a MP plenum ?

I plan to upgrade the intake side of my car, but just hear that remove the plenum is a pain in the arse.

09-13-2002, 02:14 AM
They claim 23 RWHP if you go with the 85mm TB also.

Yes, you have to take off tha supercharger to get the plenum off.

09-13-2002, 03:18 AM
I noticed a difference with just the MP plenum with a 75 mm TB and a 76 mm mass air...now if I had a 85 mm TB....Id need like a 90mm Mass air or Id be restricting that 85mm TB..I dont even hav ea freakin 85mm TB on my 750 rwhp turbo v8!

Les Borda
09-13-2002, 06:15 AM
Let me get this straight, you can bolt on that big ~~~ Magnum Powers inlet plenum to a standard charger without doing the Magna Port II thing to the M90??

09-13-2002, 07:03 AM
The MP inlet plenun will bolt to a 94-95 supercharger with no mods, but not the early 89-93 style. Of course, I'm sure it does more with bigger TB/MAF and supercharger enhancements.

My plenum is just hooked up to an old "S" model charger.

09-13-2002, 12:25 PM
Just so ol' DrewsSC doesn't think he has gone crazy, I inadvertently made that previous post while logged in with his ID! I was helping with some user issues and forget to logout of his account!

Sorry about that!

09-14-2002, 04:07 AM
Well the horsepower sounds good, taking the SC off doesnt!

09-14-2002, 11:21 AM
Didn't I read somewhere that MP is making in intake plenum to fit the early blowers? I don't think I dreamed it!


XR7 Dave
09-14-2002, 07:59 PM
Only if you also get the MagnaPort done to your early style blower.