Originally posted by HolyRollerzC3:
I have a 98 SVT, ....i have a kkm intake, proflow maf with calibrator, bat y-pipe, and bosal cat back exhaust, and yet my car is slower then stock after it heats up. Any suggestions?



1) Spark Plug gap or wiring order.

...if you removed SP or wires recently.

The first thing to check is the SP wiring order and gap.
Duratec V6 Spark Plug wiring order. Note the 4-6-5 for the coil pack near the firewall side.

Firewall side
4- 6 -5 <--coil pack
3-2-1

1-2-3 <--engine
4-5-6
Radiator side

Spark Plug gap 0.054 inch

Scan and post codes.


2) IMRC failure (lack of power at higher than 3.5K RPM).

Did you get a P1512, P1513 or P1519 code?
Read this.
http://www.contour.org/FAQ/FAQ.php?s=probs&displayid=27

If it is intermittent failure, you may want to relocate the IMRC before it is too late.

Read cvkillacontour98's post in this thread.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=perf&Number=749718&page=&view=&sb=5&o=&fpart=all&vc=1

and if it is too late, you need Mr. Hightower's how to.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=v6maint&Number=1249131&page=&view=&sb=5&o=&fpart=all&vc=1

3) Maybe fuel pump

4) Maybe heat soak.

Last edited by Tony2005; 08/05/06 06:41 PM.
"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles