K&N FIPK and offroad x question

redfire03 cobra · Jul 6, 2004

I am planning on getting an offroad x-pipe and the K&N FIPK. Will I need a tune when I add these two parts? I have read the the CAI will make you run lean, and the offroad x will make you run rich. So should I be ok with the factory tune with regards to these two bolt ons? It is my daily driver, so I need it to run well with no hick-ups. Thanks for your input. I currently have the K&N drop in airfilter, so I was thinking of just removing the air silencer instead of buying the CAI. ANy thoughts???

Tat98Cobra · Jul 6, 2004

redfire03 cobra said:
I am planning on getting an offroad x-pipe and the K&N FIPK. Will I need a tune when I add these two parts? I have read the the CAI will make you run lean, and the offroad x will make you run rich. So should I be ok with the factory tune with regards to these two bolt ons? It is my daily driver, so I need it to run well with no hick-ups. Thanks for your input. I currently have the K&N drop in airfilter, so I was thinking of just removing the air silencer instead of buying the CAI. ANy thoughts???

A CAI should not change your A/f ratio - its the MAF's job to keep the A/F consistant when more air is introduced. Most lean situations are probably caused by turbulence messing up the MAF's signal due to the 90 degree bend.
An X-pipe may change your A/F though - not sure if it would be lean or rich - since thats on the exhaust side.
Incidently, I did notice a pretty good SOP gain from the K and N FIPK.

peace

COBRA90GT · Jul 6, 2004

If you plan on running an off-road midpipe, you should probably consider adding a set of MIL Eliminators unless you are going the "chip route to resolve the "check engine" light dilemma:

http://www.ponyexpressperformance.com/ Main URL

http://www.ponyexpressperformance.com/mileliminators.html Mustang URL

travis0712 · Jul 7, 2004

The K&N alone did produce a feel of gains... very noticable... tires felt slick even though they were in great shape... but the offroad x-pipe... I did notice a drop in low end torque and I suspect the A/F is lean.... so... I removed the x until I can get to a dyno... with my new baby due / new house / my budget it tight

Damn it!

MystiChrome Coupe · Jul 7, 2004

Just check your A/F on a dyno after the O/R X pipe install. The CAI should be fine as stated above.

redfire03 cobra · Jul 7, 2004

Thanks guys. I already have a prochamber from my old 2002 GT, do you know if that will fit the 03 cobra. My old GT was a 5spd. Thanks for the input.

GrayCobra · Jul 9, 2004

redfire03 cobra said:
I am planning on getting an offroad x-pipe and the K&N FIPK. Will I need a tune when I add these two parts? I have read the the CAI will make you run lean, and the offroad x will make you run rich. So should I be ok with the factory tune with regards to these two bolt ons? It is my daily driver, so I need it to run well with no hick-ups. Thanks for your input. I currently have the K&N drop in airfilter, so I was thinking of just removing the air silencer instead of buying the CAI. ANy thoughts???

Here is what my setup looks like up top. The K&N FIPK2 CAI gets that Eaton to sound just whine (ie. FINE). I just hooked up the Magnaflow (streetable type) X pipe and catbacks. Together they work very well compared to the restrictive/quite stock setup. It makes me wonder why I waited so long to do it. As for the A/F mixture, go see a top notch Dyno tuner. P.S. DynoJet #'s went up 48 RWHP and 45 RWTQ.

redfire03 cobra · Jul 9, 2004

Gray Cobra,

Once you added your exhaust and CAI, what did your A/F ratio look like on that dyno. Nice numbers though. Have you had your car tuned since the bolt on's?

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