Custom Prom - Page 2 - ZR-1 Net Registry Forums

91MinuteMan · 12-09-2005

I put my Haibeck chip in @ a dyno facility so that I could do a before and after. I'm running a mildly modified engine just port matching of the intake runners and exhaust manifold and a Callaway catback exhaust. At the rear wheels, I picked up 5hp to 351 and 4ft/lbs to 348 at peak power over the stock chip. Mostly I wanted the cooling fans on at lower temp and the full power default the few hps & ft/lbs were a bonus.

Aurora40 · 12-09-2005

How do you like the Callaway exhaust? Any sound clips? I really want to hear one in person. It seems like a nice system, though it's quite pricey.

91MinuteMan · 12-09-2005

Quote:

Originally Posted by Aurora40

How do you like the Callaway exhaust? Any sound clips? I really want to hear one in person. It seems like a nice system, though it's quite pricey.

I bought the car this past fall with the Callaway system already installed and I have never heard a stock exhaust system, meaning I have no basis for comparison (a circumstance that I will remedy come next year). The car was a replacement for a '71 coupe that had high decibel flowmasters. The Z is quieter on the highway but around town it may be a "pick 'em". As we get our 1st major storm of the season, the car is warm and cozy in its winter home. Maybe by spring I'll figure out how to post noise.

Aurora40 · 12-09-2005

Cool, thx for the feedback on them. Are you planning on going back to the stock exhaust? Or are you getting another Z?

cwmoss · 12-11-2005

I just put the latest GM chip in my 94. It had an aftermarket chip in it when I bought the car. It runs sooo much better, although I have the dreaded "skip shift " again. I have a CAGS plug ordered and that will take care of Big Brother!

12-09-2005	#11
91MinuteMan Join Date: Nov 2005 Location: Massachusetts Posts: 20	Re: Custom Prom I put my Haibeck chip in @ a dyno facility so that I could do a before and after. I'm running a mildly modified engine just port matching of the intake runners and exhaust manifold and a Callaway catback exhaust. At the rear wheels, I picked up 5hp to 351 and 4ft/lbs to 348 at peak power over the stock chip. Mostly I wanted the cooling fans on at lower temp and the full power default the few hps & ft/lbs were a bonus. Last edited by 91MinuteMan; 12-09-2005 at 09:54 AM.

12-09-2005	#12
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,704	Re: Custom Prom How do you like the Callaway exhaust? Any sound clips? I really want to hear one in person. It seems like a nice system, though it's quite pricey.

12-09-2005	#14
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,704	Re: Custom Prom Cool, thx for the feedback on them. Are you planning on going back to the stock exhaust? Or are you getting another Z?

12-11-2005	#15
cwmoss Join Date: Nov 2005 Location: Caldwell, Texas Posts: 30	Re: Custom Prom I just put the latest GM chip in my 94. It had an aftermarket chip in it when I bought the car. It runs sooo much better, although I have the dreaded "skip shift " again. I have a CAGS plug ordered and that will take care of Big Brother!