I am losing performance somewhere, its not drastic but the car definately has more in it. Preheader runs were 13.9 at 102 mph with a 2.28 60'. Post header runs were 13.8 at 103 mph with a 2.24 60'. Considering the 60' is similiar, one would think that the car should run better times with the headers.

There is an exhaust leak that can be heard but it cannot be located, I have checked all gaskets, and collectors and still I cannot find an exhaust leak. The easiest way to hear it is to kneel down on the drivers side by the front tire and you can hear a "tick tick tick tick". Are there any other parts of the header that could leak?

If anyone has any hints or suggestions, that would be great.

 

It seems the area in which the header mates with the y-pipe is vulnerable to leaks, I would check that out as well. If there is a leak that is occuring before the front 02 sensors, then that can degrade the performance. Is the car running any differently or popping a SES light?

 

I checked that area before, I have it wrapped with a bandclamp and heat resistant tape. Theres no SES light (but the car is tuned for the headers). The car runs perfectly smooth, and pulls hard. The only thing that makes me suspcious are the 1/4 times and the small exhaust leak.

 

what were you expecting to run? if you straightened out that 60 foot you would be in the mid 13's.. an exhaust leak that is past the o2 sensor isn't going to make a difference in your 1/4 mile time.

 

well, the thing that makes me wonder is that both 60' foots were the same for my header and non-header runs but the runs were only .1 apart. I was thinking that the headers would have made more of a difference

 

I agree, your times are being a little hindered by your sixty foot times. Otherwise, they are not off par for your mods. Even with the band clamps, my headers still have slight leaks on the drivers side where it mates to the y-pipe.

 

you did go up in mph so that is a sign that its making more power.. but for the 10-20hp the time is not going to drop much.

 

so do you think with better suspension and tires, that i'd see more out of my exhaust modifications?

oh and when i did the runs, i was granny shifting. i dont speed shift

 

Sticky tires will make a huge difference, some suspension work will play a bit of a role as well. Some practice with your launches will also make a difference.

 

so you think with a 2.0 or lower 60' i could be in the mid 13s? alright

 

Yes.

 

Well, makes me feel better that my car is normal.