Catback Exhaust plus X-Pipe? - ZR-1 Net Registry Forums

NVMYRC51 · 11-12-2013

I posted this over on the Corvette Forum also. I know most everybody here is on there as well. My 1990 is chipped but stock otherwise. If/when I add a 3" Catback system w/X-Pipe do I need to have my chip updated from Marc? Thanks.

Craig,

GOLDCYLON · 11-12-2013

Quote:

Originally Posted by NVMYRC51

I posted this over on the Corvette Forum also. I know most everybody here is on there as well. My 1990 is chipped but stock otherwise. If/when I add a 3" Catback system w/X-Pipe do I need to have my chip updated from Marc? Thanks.

Craig,

Will the cats be retained?

XfireZ51 · 11-12-2013

Quote:

Originally Posted by NVMYRC51

I posted this over on the Corvette Forum also. I know most everybody here is on there as well. My 1990 is chipped but stock otherwise. If/when I add a 3" Catback system w/X-Pipe do I need to have my chip updated from Marc? Thanks.

Craig,

You including headers?

GOLDCYLON · 11-12-2013

Quote:

Originally Posted by XfireZ51

You including headers?

I dont think so I think he is going after Todd's 3inch B&Bs and X pipe he has listed for sale.

NVMYRC51 · 11-12-2013

Yes, talking to Todd but even if I don't get his I am doing the exhaust in the near future. Will be keeping the cats at this point, not doing headers yet. Going to build in steps so I can actually catalog the power increases.

1. Catback w/X-Pipe.
2. Headers minus Cats.
3. Intake Porting.
4. Intake Cams w/head porting.

Will also do 4.10 gears in there somewhere and I will do the required updates to the Chip as needed.

Craig,

GOLDCYLON · 11-12-2013

If thats the case for step 1 Then the answer to your question is No. when you hit 2 3 4 yes you will need to mod the chip

bamawrx · 11-12-2013

Not to hijack a thread, but I've been wondering about this same question also. I am considering doing headers when I replace the exhaust to save labor. I'm looking at the same mods as the OP and also in phases.

I'm getting some back fires now, so I figured a reflash would be part of the process. I also have 93 octane here so that may be something I can include in a reflash.

NVMYRC51 · 11-12-2013

Thanks for the info guys. Does anybody have a sound clip of a B&B exhaust on their ZR-1? Not crucial to anything, just thought I would ask.

Craig,

NVMYRC51 · 11-12-2013

Hey on second thought, what if I was to go ahead and delete the Cats now? Stock manifolds with cats deleted? Reflash the chip? More importantly is there any benefit powerwise without the headers?

Kevin · 11-12-2013

around 5:10 in this video

https://www.youtube.com/watch?v=bkOSJ79wGbI

11-12-2013	#1
NVMYRC51 Join Date: Sep 2013 Location: Florence, KY Posts: 57	Catback Exhaust plus X-Pipe? I posted this over on the Corvette Forum also. I know most everybody here is on there as well. My 1990 is chipped but stock otherwise. If/when I add a 3" Catback system w/X-Pipe do I need to have my chip updated from Marc? Thanks. Craig,

11-12-2013	#5
NVMYRC51 Join Date: Sep 2013 Location: Florence, KY Posts: 57	Re: Catback Exhaust plus X-Pipe? Yes, talking to Todd but even if I don't get his I am doing the exhaust in the near future. Will be keeping the cats at this point, not doing headers yet. Going to build in steps so I can actually catalog the power increases. 1. Catback w/X-Pipe. 2. Headers minus Cats. 3. Intake Porting. 4. Intake Cams w/head porting. Will also do 4.10 gears in there somewhere and I will do the required updates to the Chip as needed. Craig,

11-12-2013	#6
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: Catback Exhaust plus X-Pipe? If thats the case for step 1 Then the answer to your question is No. when you hit 2 3 4 yes you will need to mod the chip __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

11-12-2013	#7
bamawrx Join Date: Jul 2013 Location: Alabama Posts: 59	Re: Catback Exhaust plus X-Pipe? Not to hijack a thread, but I've been wondering about this same question also. I am considering doing headers when I replace the exhaust to save labor. I'm looking at the same mods as the OP and also in phases. I'm getting some back fires now, so I figured a reflash would be part of the process. I also have 93 octane here so that may be something I can include in a reflash. __________________ 2011 Carbon Edition Z06 #225 1990 ZR1 #88 Last edited by bamawrx; 11-12-2013 at 01:58 PM.

11-12-2013	#8
NVMYRC51 Join Date: Sep 2013 Location: Florence, KY Posts: 57	Re: Catback Exhaust plus X-Pipe? Thanks for the info guys. Does anybody have a sound clip of a B&B exhaust on their ZR-1? Not crucial to anything, just thought I would ask. Craig,

11-12-2013	#9
NVMYRC51 Join Date: Sep 2013 Location: Florence, KY Posts: 57	Re: Catback Exhaust plus X-Pipe? Hey on second thought, what if I was to go ahead and delete the Cats now? Stock manifolds with cats deleted? Reflash the chip? More importantly is there any benefit powerwise without the headers?

11-12-2013	#10
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Catback Exhaust plus X-Pipe? around 5:10 in this video https://www.youtube.com/watch?v=bkOSJ79wGbI __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"