Intake, Header, HFC, CBE = Too Lean?

The Dimer · 01-09-2012, 01:40 PM

Quote:

Originally Posted by tranceformer

I have HPS post maf tubes + LTH + Y-pipe and didnt need a tune. By that iI mean i did not gain much power after the tune.

Does that mean your AFR was in check and your car was running smoothly too?

tranceformer · 01-09-2012, 07:57 PM

Quote:

Originally Posted by The Dimer

Does that mean your AFR was in check and your car was running smoothly too?

Yes, the car was running pretty smooth. It is smoother now and all the usual tweaks were added (removed speedlimiter, smoothed out the fuel curve, raised revlimiter to 8k RPM, etc).

tonybui · 01-20-2012, 10:33 AM

My MPG dropped after exhaust and even more after HFC. Would a tune help?

6MT · 01-20-2012, 10:49 AM

Mine was way too lean (even at idle) when I did pretty much the same mods (execpt for the headers). A quick trip to my tuner corrected the issue.

semtex · 01-20-2012, 11:11 AM

Quote:

Originally Posted by tonybui

My MPG dropped after exhaust and even more after HFC. Would a tune help?

Yes, but if you plan on doing any more mods, I'd get them done first, then do the tune. That way you won't have to re-tune after putting on more mods.

01-20-2012, 10:49 AM	#184 (permalink)
6MT A True Z Fanatic Join Date: May 2009 Location: ITU Zone 2 Posts: 22,459 Drives: Reliant Robin Rep Power: 1790	Mine was way too lean (even at idle) when I did pretty much the same mods (execpt for the headers). A quick trip to my tuner corrected the issue. __________________ Andrew 2009 370Z Sport/Touring 6MT sold 2013 Honda Civic Si coupe D/D

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01-20-2012, 10:33 AM	#183 (permalink)
tonybui A True Z Fanatic Join Date: May 2009 Location: Maryland Posts: 1,397 Drives: 09 Sports 6 Speed Rep Power: 427	My MPG dropped after exhaust and even more after HFC. Would a tune help?