Running Rich???
Running Rich??? i have installed a whole new exhaust system on my z-28 with long tubes catted y-pipe and magnaflow. i noticed more exhaust fumes coming out than before and i also smell the exhaust more. does this mean i'm running rich? and if so am i in need of a tune? thanks
Long tubes will make the car run alittle richer, If you plan on more mods in the near future heads or cam wait to get it tuned unless the tuner will retune for no charge. Did you remove the AIR system and the EGR if you have one? I've removed the air, egr,and cats you can really smell the exhaust from my car.
Originally Posted by conan
Long tubes will make the car run alittle richer, If you plan on more mods in the near future heads or cam wait to get it tuned unless the tuner will retune for no charge. Did you remove the AIR system and the EGR if you have one? I've removed the air, egr,and cats you can really smell the exhaust from my car.
no everything is hooked up to the new system. and heres the great thing, i will pass emissions with this setup
after the instal i noticed that the exhaust fumes are really shooting out more. must be because theres less restriction in the pipes and the engine is alowing the gases to just pound on through. 
Originally Posted by dmart
More importantly how does it sound?! Thinking about going with your exact setup. 
dude, i really like the sound. i wanted to get the borla or gmmg but that would have put me over 2000.00 so i went with the best next thing and got the magnaflow. cost me 1750.00 for the supermaxx system,magnaflow and shipping from summit. and they took under two days to get it to me which gave me enough time to remove the stock system while the new system was being shipped. i have some posts of my install and some really great pics. check them out
https://ls1tech.com/forums/generation-iii-external-engine/470838-who-has-supermaxx-system.html
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It'll run rich after the LTs, it should adjust after about 200 miles, if it doesn't, the other alternative is to tune it
FWIW if the exhaust smells like gas after 200 miles get it tuned, or you'll ruin the cats
FWIW if the exhaust smells like gas after 200 miles get it tuned, or you'll ruin the cats
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Originally Posted by 2K2WS6TA
It'll run rich after the LTs, it should adjust after about 200 miles, if it doesn't, the other alternative is to tune it
FWIW if the exhaust smells like gas after 200 miles get it tuned, or you'll ruin the cats
FWIW if the exhaust smells like gas after 200 miles get it tuned, or you'll ruin the cats
see, i dont get that because why would anyone bother tuning a car if the computer is going to adjust? i must not understand the whole picture of this. how would the computer relearn if i didnt even change it in the first place?
Originally Posted by BadLtBlu99TA
what is round about air/fuel ratio with headers on an LS1 , and descreened MAF, and No Cats , with MAC Mid lenght headers , and mac Y pipe...?
here look at my thread and posts. theres alot of really good pics when i did my install of my exhaust.https://ls1tech.com/forums/showthread.php?t=470838
Originally Posted by dmart
I don't mean to take this off topic but would it be possible to get a clip? Do not want to make more work for you or anything, I would just LOVE to hear it. 
i'm working on getting a sound clip of my system.
Originally Posted by senicalj4579
see, i dont get that because why would anyone bother tuning a car if the computer is going to adjust? i must not understand the whole picture of this. how would the computer relearn if i didnt even change it in the first place?
FWIW GMs stock tunes are very conservative, that's why you can get more HP out of a bone stock vehicle, by having it tuned
crystal clear. thanks for that. so my computer might adjust enough or it might not after lid, free ram air, long tubes, catted y, and cat back. does this mean if it does adjust to these mods it will be conservative also? or will it adjust to its full potential? or does it mean that it will adjust just enough to be drivable?
The PCM will attempt to get it close to the "normal" parameters as it can
Will that be conservative, yes it will
Can you benefit from a tune, no matter what level of mods you have, yes you can, is it required everytime you change a component, no
Will that be conservative, yes it will
Can you benefit from a tune, no matter what level of mods you have, yes you can, is it required everytime you change a component, no