I guess the cat's out the bag now huh
To properly install this 12mm plenum spacer you will need four m8-1.25, 160mm bolts for the center. The old bolt for the rear and for the very front will still work fine. New plenum cover bolts also need to be changed to longer bolts. I can't remember what was the exact length right now off my head but the factory bolt size is M6-1, so you will need a bolt that is at least 10mm longer from factory length. You can actually find the cover bolts at home depot but the longer manifold bolts probably need to be ordered. I got 4 from texas fasteners for 13 bucks shipped.
The plenum spacer work well. You won't be like WOW!! as you have with the insulators but it will definitely help with better air distribution to all six cylinders and create more volume helping with stagnet air. After I installed the spacer, my kr count on part throttle with 93 octane went from around 3 to zero!! much was cut down on WOT too but not gone completely. I actually had to do few logs for vince just to be sure that this was really happening . I even thought he was sending me tune files with the knock senor desensitized LOL.
I just took a bunch of pics but I am having trouble loading to my net book right now
Once I get this straight I will post plenty of pics for you guys. I also have a dyno coming up with vince next week so I plan to dyno the plenum spacer at that time also.
Stay put
