[n20mstr]

I had to put "quiet" mufflers on my car to run at a certain track, now in the heat the car is about .10 to .15 slower, what should i do??
Im leaving on a plate and putting a direct port on top of that,

Up the plate jetting? Easy to do, only one jet
Up the Direct Port? A little harder, 16 jets
Add timing?? Im pulling out prob too much anyway i pull 20* for a "total area" jet of .113. Plugs all look good for timing, except get very little specs sometimes on just one plug
Lean out the carb?? because of the mufflers??
Up the Brake chip for the brake?? I have upped the chip from 3100 to 3300 so far and its helped a little (the car has a 295 drag radial on it)

Of course....i can just try another muffler, which i already plan on doing

 

[n20mstr]

IT has .032 in the fogger now.....its been going 8.70's like a bracket car, just isnt fast enough...

 

[n20mstr]

funny thing is, until i changed the mufflers, i couldnt bring it in any sooner than .72 or .79, now i have it coming in at .58, and yea i keep bringing it in sooner ......these mufflers (Hooker Aerochambers) seem to have killed the front half of the track, the car still picks up 30mph on the back half, and lost about 2 mph overall....seems to have lost the "hit" it once had off the transbrake

 

[n20mstr]

Should`ve put a HookerMaxflow on there,any "chamber muffler" will hurt power a little.Tested aerchamber against maxflow`s years ago and they were quicker, and not to loud.

What mufflers have you been using currently??? Maxflows are a LOT cheaper than the Magnaflow 4" Im cheap LOL