CAI, tune, hesitation

[fartingchicken]

I installed the Brenspeed C&L CAI (very poor instructions, BTW), and tuner. It's a lot faster with the 91 octane tune, but I get hesitation when the car is still cool and I goose it. I suppose that may be expected, but I'm wondering if it's too lean? Opinions? I'll have to see if fuel mixture is part of the tune. Brenspeed didn't answer my email so far.
Thanks.

 

[partsbill]

I have the JLTII with a SCT2 tuner with 93 octane tunes from Doug at BamaChips, I have his torque, performance, and race tune which I run as my daily driver tune, I have no hesitation at all, as a matter of fact my car is even more responsive when it's cooler, I have to be careful when I do punch it because it responds so quick, it's very easy to find yourself leaving a patch of rubber in places (like beside the deputy sheriff at the red light), good thing he was cool about it and gave me a thumbs up. I don't think your car is running to lean, if anything it might be running to rich.

 

[MikeysOTP]

You might want to wait before messing with anything, the computer needs time to adjust to the new tune (I am totally guessing). I have heard a lot of people talking about the computer being adaptive, I don't know specifically what it is programmed to adjust for but I wouldn't bet against the tune having some sort of effect on it. I run the Brenspeed 93 octane tune and like Bill's, mine is VERY touchy when cold.

 

[kooldawg6]

I run the Brenspeed 93 tune with the WMS CAI in mine. I havn't experienced any ill effects in just over 19K miles now. I would wait for Brent to answer you before changing anything.

 

[JTGrant]

I have to be careful when I do punch it because it responds so quick, it's very easy to find yourself leaving a patch of rubber in places (like beside the deputy sheriff at the red light), good thing he was cool about it and gave me a thumbs up.

 

[fartingchicken]

Seems to be doing okay now. Might have been a "burp" in the system, or some fuel that was disagreeable? I don't think of any computer as being intuitive enough to adjust itself though. It does what it is programmed to do.

 

[kkdoughboy]

Not sure why you would need instruction on how to install a CAI on a new mustang? It's like the easiest thing I've ever done. Dont try installing a set of CMDP's or UDP's

 

[kooldawg6]

Not sure why you would need instruction on how to install a CAI on a new mustang? It's like the easiest thing I've ever done.

I used them for mine, but then again stuff got moved around and spliced and what not...

 

[fartingchicken]

Come on now, don't be condescending and insulting. The cars that I worked on (in the past) intensively had points, rotors, and carburetors. If I start working on a modern car with equipment I'm unfamiliar with I need instruction. It is not that I am incapable of the job. I have had no need to go beyond brakes, air cleaners, belts, and oil changes in my modern vehicles. There IS a learning curve.

 

[blacksheep06]

I have a brenspeed tune and when my car is cold it's herky jerky as hell. I have to let mine warm up for at least a min or my head will end up hitting the windshield when I barely touch the gas. It bucks violently like I'm trying to actually ride a mustang. Only does it right after start up.

Either I have to give it more gas or take my foot completely off the gas. That's one reason I'm having my car dynotuned soon.

 

[bigcat]

you should always let your car warm up a bit before leaving.

 

[kkdoughboy]

Alright Fartingchicken, I'll lay off of ya. We're all here to help a brotha out

 

[fartingchicken]

O-tay.
I don't know what all these acronyms are for the junk on new cars. It's sure not like a 68 Chevelle, an 82 Jeep, or a 67 Catalina. Ja, just dated myself.