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View Full Version : Pulley / Headers for my GT500


1BADGT500
December 25th, 2006, 02:49 AM
Hey Justin Derek here,

1st of all - Happy Holidays!!

A couple of questions for you .....

If I was to put a set SSW (Stainless Works) long tube headers and cat delete /off road pipes on my GT500 would I need a new tune or can I run the same tune I have now with no worries about A/F ratio changes etc..?

Also, Do you have a tune yet for a 2.6 or a 2.8 pulley swap for my car? I am anxious to do a pulley swap as soon as you can get a tune for me.

Thanks Justin!~:)

Justin@VMP
December 26th, 2006, 07:53 PM
Hey Justin Derek here,

1st of all - Happy Holidays!!

A couple of questions for you .....

If I was to put a set SSW (Stainless Works) long tube headers and cat delete /off road pipes on my GT500 would I need a new tune or can I run the same tune I have now with no worries about A/F ratio changes etc..?

Also, Do you have a tune yet for a 2.6 or a 2.8 pulley swap for my car? I am anxious to do a pulley swap as soon as you can get a tune for me.

Thanks Justin!~:)

If you put the headers on I would like you to install a wideband and datalog the a/f for me.

I have a pulley tune, I would just like to do more testing before I release it.

1BADGT500
December 26th, 2006, 11:36 PM
If you put the headers on I would like you to install a wideband and datalog the a/f for me.

I have a pulley tune, I would just like to do more testing before I release it.

Okay thanks Justin! I don't have a wide band, how much are they and where can I get one??

Justin@VMP
December 26th, 2006, 11:40 PM
I can get you one for 400-500, there is a new one coming out mid january that i can get for you.

1BADGT500
December 29th, 2006, 12:23 AM
I can get you one for 400-500, there is a new one coming out mid january that i can get for you.

Thanks Justin, another question please....

I decided to purchase a S.W. off road X-pipe which deletes the cats with lead pipes and bolts to the factory exhaust manifolds and the factory exhaust pipes after the off road x-pipe.

Here's what I got so far:

2007 GT500 2 1/2" x pipe and off road pipes for use with factory manifolds. 2 1/2" x pipe that connects to factory exhaust system and bolts onto factory manifolds.

Scott from S.W. says that I simply bolt it in and then "turn off" my 02 sensors since I am not running cats.

Won't my computer then throw a check engine light if I disconnect the 02 sensors and what does he mean by "turn them off"? Also won't my ECM be confused not having any input from the 02 sensors?? I want to avoid trouble and do it right so I am seeking your advice. I hope I won't need to monitor my A/F ratio with this setup.

Any help will be greatly appreciated.

Thanks!!!! Derek

Justin@VMP
December 30th, 2006, 10:46 AM
Hi Derek, email me and I can turn off the rear O2 sensors in the tune. So you can leave them disconnected, or just install them in the pipes and you won't throw a code from the lack of cats.

1BADGT500
December 30th, 2006, 12:41 PM
Hi Derek, email me and I can turn off the rear O2 sensors in the tune. So you can leave them disconnected, or just install them in the pipes and you won't throw a code from the lack of cats.

Thanks Justin, I'm ordering the part today and they say it's about 4 weeks out so I would like to have you just turn them off in my 92 oct. E-10/JLT intake tune so I don't have to mess with trying to install them in the pipes.

Thanks for your help Justin. :D