Car is sputtering & hesitating under acceleration..Exhaust sounds muffled??

[HB ZR-1]

Originally Posted by Kevin

i take it you've never pulled the plenum...it's not hard at all

I had it off when i first bought it in 2000 to fix a vacuum issue and tied the vacuum endpoints. I have not taken it off myself though. I will have to make a list and make the best of it when it comes off next. Who is porting and polishing plenums these days? Last i inquired Doug Rippie was doing it but last i heard he sold off his inventory.