Just got a ZZP 3" Dowpipe and 3" high flow cat installed. - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 07-18-2009, 12:21 AM   #31
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That would finish the exhaust yes. After that to improve the flow you would need higher ratio rockers, or a cam.
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Old 07-18-2009, 12:33 AM   #32
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well i dont plan on putting that much money into my car. Just want a loud deep sounding bonneville with some quickness. What are some other mods im missin that arent a huge upgrade and will keep me in budget? My intake is stock with just a K&N Drop in filter.

Finally whats a good limit on mods when you use your bonne as a daily driver? A cam and rockers sound pretty intense.
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Old 07-18-2009, 12:40 AM   #33
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A smaller pulley and a good tune. My car is my daily driver, and I'm on the heavy side of modding.
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Old 07-18-2009, 12:44 AM   #34
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For some reason im scared of getting a smaller pulley. Do they shorten the life of your supercharger or screw with it anyway? ZZP recommended i get the 3.6 pulley with the current mods i have.

Where can i get a good custom tune?
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Old 07-18-2009, 12:47 AM   #35
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A 3.6" is a very safe size to start with. Your car will be fine with that size. You can get a canned tune from intense racing. Gives you basic performance tune.
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Old 07-18-2009, 01:04 AM   #36
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Okay i will prolly get the 3.6 then. Dont i already have the basic performance tune with the zzp 1.0 tune that i have? i looked at the intense pcm and it has the same settings that my zzp one has.
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Old 07-18-2009, 01:06 AM   #37
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The ZZP tune is a basic performance tune, yes, didn't see that on your sig.
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Old 07-18-2009, 01:16 AM   #38
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Alright thanks for all your help man, i always learn so much from you lol.

My last question of the day is: Does freeing up my exhaust help with gas mileage at all. Ecsepcially with the mods i currently have?
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Old 07-18-2009, 01:21 AM   #39
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Anything that makes the engine work less will help.
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Old 07-18-2009, 02:04 AM   #40
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Quote:
Originally Posted by Bwayney View Post
My last question of the day is: Does freeing up my exhaust help with gas mileage at all. Ecsepcially with the mods i currently have?
When I opened my exhaust I saw an increase of about 3 MPG for freeway driving. Then shortly after that my butt dyno and right foot were having so much fun dancing the light fantastic with WOT runs I lost track.
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