Originally Posted by K Twisted
Thanks LAS97.. I really appreciate that. You have some good/valid points there!!
You folks make my day, everyday. LOL, seriously you all do. I love learning, and this environment on the forum is great stimulation of the mechanical inclined senses of the Pony Car builder.
---------- Post added at 07:28 PM ---------- Previous post was at 07:09 PM ----------
Originally Posted by KATO
I disagree with most up above. I say get the Exhaust first, then get the Tuner after.
Kato, don,t get it twisted and draw a definitive conclusion just yet. We are all quite aware through experience that making upgrades yeilds some changes in tolerances. The bottom line is choose either, but the best choice is to get the tuner first, and the posts above have illustrated that fact in one way or another. The post above also notifed the information requestor that he/she must decide on what is more important to the user (JCOb72), but with the understanding that the results may not be what is expected because the users intent is clearly to increase beyond stock parameters. We got that.
Welcome to the discussion.
During my upgrades I understood the factors that increased air induction had on the outpout of the engine, and fully expected the O2 sensors would not be able to compensate for down stream data flow back to the PCM. The eroneous reading from the the down stream sensor sent a rich signal to the PCM which corrected (over corrected) and changed cumbustion to lean; spark knocks followed. Because I was not a dummy I enlisted an expert to assist.
Whoa, goin breathless...continuing on...I had no choice to but to go tune.
So, if JCOB72 does go for exhaust upgrade, he/she will also need to be prepared to delete the down stream sensors "if" (if is good) they fault out. Mine took a few hundred plus miles before the PCM finally threw the signal.
End statement, do either, but be prepared to buy an antidote depending on budget, and then upgrade to clean, lean, mean, pony machine (no I won"t restate possible tuning requirements, its up top somewhere). I am a DIY not an operator.
Once again, welcome to the discussion. Thanks.