3.5" pipe would be of no benefit unless you had a blower or nitrous. Naturally aspirated it would probably rob power. There needs to be some backpressure which is why an exhaust system too large is just as bad as one too small.

 

Did you bother to check the DA???

Headers should only net you MAYBE 20rwhp at BEST which translates into MAYBE 2 10ths or 2mph all of which can EASILY be whiped out by a worse DA

 

good point
it was a different track
I dont think there is too much difference in altitude ..da is altitude right?
that track was rough too or I had wheel hop not sure it just felt different
that may be a factor also
Ill try it next week at piedmont and see what happens

 

DA is your effective altitude yes but you can race at the same exact track on 2 different days or even the same day but a few hours apart and have a drastically different DA. That's why people don't generally run the same exact time all night long. You'll notice that people start off slow then gradually get faster as the night wears on till they come to a point where they dont seem to get faster or they slow down again. It's all due to the lowering of temps and the raising or lowering of dew point and barometric pressure. If you wann aacurately test your reults do a search on DA in the Off-Topic truck forum.

 

sounds interesting
Ill have to check that out thanks

 

Are they coated? If they aren't you're more than likely running incredibly rich. I'd contribute that to some of it too.

 

theyre coated
Its not like I slowed down just stayed the same
I got some plans for next week so well see what happens
I aint giving up on em just yet