Do I need a new tune?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Craig B · 03-23-2014, 07:49 PM

I will soon be doing my 2nd cam swap on my 1LE. The current cam is a 227/235 with 115 L/s. I will be installing a custom cam that was designed for FI. The specs. are 226/246 with 117 L/S. I also installed 3 inch exhaust a few months after I had it tuned. Will it need to be tuned right away?? I am thinking yes, but would like to confirm with some people in the know. Thanks in advance.

Frost · 03-24-2014, 08:20 AM

That's a subjective question

Can you start it up on the new cam and drive it around EASY until time for re-tuning? YES! Avoid heavy or WOT until it goes back on a dyno and with a wideband but you should be fine. Your fueling (if not a hack tune the first time around) should stay relative close at heavy throttle but timing needs will change a bit. It might even BE ok at WOT; but no need to take that risk until you get the tuning updated.

Craig B · 03-24-2014, 05:44 PM

Good to know, thanks for the info.

Ret Fuzz · 03-24-2014, 08:46 PM

different cam different characteristics different tune

Frans96ss · 04-06-2014, 01:31 AM

Give us a call if you need a dyno tune.

03-23-2014, 07:49 PM	#1
Craig B Drives: 2013 1LE Join Date: May 2013 Location: NJ Posts: 685	Do I need a new tune?? I will soon be doing my 2nd cam swap on my 1LE. The current cam is a 227/235 with 115 L/s. I will be installing a custom cam that was designed for FI. The specs. are 226/246 with 117 L/S. I also installed 3 inch exhaust a few months after I had it tuned. Will it need to be tuned right away?? I am thinking yes, but would like to confirm with some people in the know. Thanks in advance.

03-24-2014, 08:20 AM	#2
Frost Drives: GM anything Join Date: Sep 2009 Location: Tuning GM in Richmond VA Posts: 147	That's a subjective question Can you start it up on the new cam and drive it around EASY until time for re-tuning? YES! Avoid heavy or WOT until it goes back on a dyno and with a wideband but you should be fine. Your fueling (if not a hack tune the first time around) should stay relative close at heavy throttle but timing needs will change a bit. It might even BE ok at WOT; but no need to take that risk until you get the tuning updated.

03-24-2014, 05:44 PM	#3
Craig B Drives: 2013 1LE Join Date: May 2013 Location: NJ Posts: 685	Good to know, thanks for the info.

03-24-2014, 08:46 PM	#4
Ret Fuzz Banned Drives: 2010 Camaro Join Date: Mar 2014 Location: United States Posts: 255	different cam different characteristics different tune

04-06-2014, 01:31 AM	#5
Frans96ss Drives: 96SS Join Date: May 2009 Location: New Castle Delaware Posts: 1,948	Give us a call if you need a dyno tune.