02blkvert

I recently added a few mods to my c5 and was wondering what are my tuning options and what would be the best route for me.I went from a stock c5 LS1 to adding a k&n cold air,kooks long tube headers,x pipe,corsa exhaust and a predator. Now i must say the difference is night and day and i am extremely happy with the results i have gotten its a complete different animal.The only negative at the moment is that i have a po420 and a po430 with is due the catalytic, i have read that with some custom tuning this can be fixed. My questions are the following, should i learn the parameters on the diablo and do the tuning my self? pay for a custom mail order tune? or just go get a dyno tune at local shop?(i rather not down here in miami all the tuners are full crap)
Please drop in and give me ur feedback as maybe it can help me make a decesion.



Thanks

edcmat-l1

If all you want to do is delete the codes, the predator should be able to do that. If you don't feel comfortable doing it yourself, you should be able to contact Mike @ Diablosport and he can do it for you, email it back, and you dump it in the PCM.

phils C5 vette

I wouldnt say all the tuners by you are crap.

You have Dan Masport just north of you if you are in Miami

tblu92

The problem you'll have is tuning for the LT headers---A Predator won't address the correct tables to tune it properly---The codes po420/po430 are a result of the LT's and the X-pipe---The only real way to fix so they don't come back is with a full blown tune---They can turn off all the enablers that are related to the cats----
As far as tuning goes---The reason LT's aren't legal like in calif--is because the only way to correct the issues they bring is by getting a tune--Which most shops can't do---what happens is the 02 bungs on the Lt's are further back then they were with stock manifolds---so your ECM gets erroneous 02 readings--The Stoich of 14.68-1 is now really much richer--something in the 14.0 to 14.5 range--The HC on your smog go way up---But you have to be careful--if you lean it down too much then your cats won't light off and your Nox goes way up ---To get it back to 14.68 you have to trick the ECM into running leaner in closed loop---Most all tuners have a diff. opinin on how to do this--It can be very difficult----BUT if you aren't in a smog stae--then don't worry--But just remember your closed loop AFR is richer--(poorer fuel mileage-)---You still deff. need to log your WOT PE fuel AFR's which change with LT's too--

02blkvert

Where exactly is he located? you know where i can get his info?

Thanks

02blkvert

Sounds good, would you go with a mail order tune?

06MonteSS

well, you can't disable the codes yourself with the newer predators... that functionality was removed due to EPA regulations....

they can be disabled with a custom tune though...

and if you'd like a complete custom tune from a diablosport CMR tuner (like me), you can get even more giddy-up from your car over the preset tune....

if interested, you can check out my info (and a small sample of some testimonials I've gotten from other's I've tuned) at this site:

http://www.eprowebdesigns.com/DiabLew_tune/

02blkvert

pm sent

phils C5 vette

I dont know if he's a sponsor on this forum, but is on others.

Google his name. He's in Boca