wrd1972

iTrader: (12)

Pulled the old 224/230 .57x" x .57x" on 107LSA and replaced it with a new 226/232 .57x" x .57x" on a 110 LSA and I am wondering if and how much the tune is likely off.

The current tune was optimized for the old cam but my tuner is buried and cant get to me anytime soon. It runs great with the new cam at WOT and NON WOT throttle and there are no apparent issues. Scan master is saying the idle BLMs have dropped a bit and the new cam definitely is not near as hard on gas. In fact, I am getting about 2MPGs more than with the old cam.

I have a wide band but have not had the time to hook it up.

You guys think the tune should be pretty close?
Any particular parameter to take a closer look at?
Thanks.

05HD

It isn't a huge difference in cam so not a huge difference in the tune either but you are being a bit reckless running it hard without at least a wideband hooked up in my opinion.

Is it pulling any KR in your logs?

MEAN LT1

iTrader: (2)

Stop being lazy and hook up the wideband and see what shes doing.

whytryz28

iTrader: (28)

You got your old cam?

bowtienut

iTrader: (1)

If it's MAF tuned, you're not living recklessly running it as is. It's going to be real close. Ask Bluecat to be sure, because I know he likes speed-density tunes also.
Did your installed ICL change? That might call for a tweak to the low rpm timing.

wrd1972

iTrader: (12)

Very little KR with the new cam especially at NON WOT. I believe most of what I see really is not detonation.

Bluecat cant get me in any time soon. The old cam ICL was 106 and the new one is 108 according to the cards. I will hook the WB up ASAP.

bowtienut

iTrader: (1)

That's good; that's the safe direction.

wrd1972

iTrader: (12)

Hooked up the wide band O2 and the A/F at WOT is definitely lean. Was 12.8 with the old cam and now its closer to 13.8 so I definitely need a tune. Bluecat is gonna dyno tune it April 30th so I wont do any banging on till then. Glad I did not go to the track.