Nissan 370Z Forum - Intake, Header, HFC, CBE = Too Lean?

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Nissan 370Z Forum (http://www.the370z.com/)

- Intake/Exhaust (http://www.the370z.com/intake-exhaust/)

- - Intake, Header, HFC, CBE = Too Lean? (http://www.the370z.com/intake-exhaust/16437-intake-header-hfc-cbe-too-lean.html)

The Dimer

01-09-2012 12:40 PM

Quote:

Originally Posted by tranceformer (Post 1482486)

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 06:57 PM

Quote:

Originally Posted by The Dimer (Post 1482568)

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 09:33 AM

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

6MT	01-20-2012 09:49 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 10:11 AM

Quote:

Originally Posted by tonybui (Post 1500351)

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.

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