Why? is it that bad? how about something from EB as to why?

im waiting on the rev order for a RP .21 and have a JP4 waiting for it... C.Poh said 4th best which should be just fine for me...lol

thx

I had a bad gasket between the header and pipe once that made my engine run like that.I ran a JP-2 pipe on my extech this past weekend and it ran great.Lee

sixpac - ok let me rephrase.. boogeyman had a jp pipe (not jp4) and had bogging issues. sorry should have been more specific :)

right on, im new to this so the tech terms fly over my head! lol

im ready to pull mine out of the wood box and, RUN IT!

THX

We have tested the jp1-2 and 4 and none were to our liking at all the one just was not there at all the 2 had grate top end but that was it and did not get good milage none of them did actly the 4 had a dead spot just as the engine comes off idle and starts to try to run after the dead spot is has good power but that makes it hard to drive and as i sayed they all dont get that good of milage now the nova 9853 is our favorite but hard to get now and not race able as of 09 for big races the sirio 2013 it s very good pipe that you can run in 09 it makes good power and is smooth and gets ok milage as well.. that makes me very happy to hear you will be very happy with it and if you need ay help at all let us know we would be happy to help out

How is the Trinity 2013 pipe for truggy?If not whats a good pipe

That is a good pipe for the ExTech in a truggy.

Colin

dynamite the one they suggest.;)

hmmmmm... If you check everything & theres nothing on the car binding/hanging up, it just may be an air leak. It don't have to be wet to be leaking! Seal it up if you haven't already...

Or like wingracer said below depending what kind of car it's in...

will do! Other then that this engine is a screamer!

oh also it is a RC8

The best 09 legal pipe for any Sirio based motor is probably going to be a 2013. 2018 might be worth trying as well.

at this time yes the 2013 is looking to be the best

my car did the same thing and ed tuned my idle gap!!!said it was to big!!!make sure you set it like the papers tell you!!!

I too have the RC8. Are you using the stock flywheel/clutch set up?!

I tried the mugen flywheel/clutch on it & it felt real good but when I was racing under flex it would just touch the rear brake disk &/or chassis & stop the engine. So needless to say I went back to the stock set-up...;)