What is wrong with my car ?

Mad1stGen

Mad1stGen

Registered
I just got back from another disappointing visit at the track. The car runs just plain slow.
First, here are results from a few months back, when we all went to GreatLakes dragway during the Chicago Meet:
Temp was around 95 or so. Best Run:
60ft = 2.345
1/8 = 10.016 @ 72.80
1/4 = 15.296 @ 95.22
At that time the car only had K&N cone filter and Reinhart Chip. Tires are 245/60/16s Nitto 450.

But today, after installing 4.10s with Trac-lok, Motorsport 9MM wires I run the following:

60ft = 2.364
1/8 = 9.947 @ 72.69
1/4 = 15.274 @ 92.19

Same tires, but only 45 degrees weather.

I know I have traction problems, thus the horrible 60ft. but why the MPH is so low ??? All maintenance is up to date, 99k on the odo.
 
RE: What is wrong with my car ?

Your 60' is about what mine is .My tires dont spin at all. my 1/8 is 9.68 @ 76.5.I've upgraded the exh.since my last run,but I dont expect any great change in et.Mine doesnt run like it should either.
 
RE: What is wrong with my car ?

seems like you are loosing power somewhere. It could be any number of things. vacuum leak, clogged convertors, low Fuel pressure, anything
 
RE: What is wrong with my car ?

I just got back from another disappointing visit at the track. The car runs just plain slow.
First, here are results from a few months back, when we all went to GreatLakes dragway during the Chicago Meet:
Temp was around 95 or so. Best Run:
60ft = 2.345
1/8 = 10.016 @ 72.80
1/4 = 15.296 @ 95.22
At that time the car only had K&N cone filter and Reinhart Chip. Tires are 245/60/16s Nitto 450.

But today, after installing 4.10s with Trac-lok, Motorsport 9MM wires I run the following:

60ft = 2.364
1/8 = 9.947 @ 72.69
1/4 = 15.274 @ 92.19

Same tires, but only 45 degrees weather.

I know I have traction problems, thus the horrible 60ft. but why the MPH is so low ??? All maintenance is up to date, 99k on the odo.
Click to expand...

At 90k I would be looking at your fuel pressure under a load first. You do the filter?
 
RE: What is wrong with my car ?

Filter has been replaced 10k miles ago. I checked fuel pressure at WOT and idle, but wasn't able to do it under load. I have to get it tested asap. Also, clogged cats might be the issue, as I get the sulfur smell once in a while under very heavy acceleration, although o2s have been replaced and the ecu has no error codes.
 
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