Mod problems?

[Guard5.0]

Personally I don't think you'll hurt it driving without "tuning" for the headers. Most tunes for headers only make changes to turn off the CEL and some will make an adjustment to compensate for the O2 sensor moving back some. FWIW I spoke to a reputable tuner all of you guys are familiar with about this recently since I am doing the same thing. Just my .02.

I'm kind of with you on this. Car runs fine now but obviously needs some tuning for the CEL and to prevent the limp mode (there was obviously something the computer thought needed protection). It's a project car for me so I'll park it in the corner till I can talk to some folks about AFR and it's relationship to the O2 sensors. Think I'll start with Beef and Lund.

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[Tyler2386]

Sounds wise. Let me know what you learn.

 

[Guard5.0]

I can do that. Maybe save you a little frustration.

 

[ORANG50]

It's not going to hurt anything, but it's a silly problem to have, considering the fix is so simple.

 

[Tyler2386]

Agreed, but at the time only a couple folks outside of roush can tune a 15 with an aftermarket throttle body, and at last check they won't remote tune. Accordingly, unless you are near their dyno shop, you can't get a tune for a TVS and headers (i.e., a tune other than roush). I know there is a car out there with such a tune, but it was done onsite with stuff that is not publicly available.

 

[Guard5.0]

Simple for some. I feel comfortable installing headers and exhaust, even the SC doesn't seem too daunting. What is the ratio of good tuners to mechanics? 100,000 to 1?

 

[Tommy V]

For one u have an afr sensor right in ur guages and usually when their is a serious issues like running really lean the cel will continually flash letting u know u could be doing damage to ur cats or other things.See what ur afr are they are very accurate being they use wideband 02,s

 

[Guard5.0]

For one u have an afr sensor right in ur guages and usually when their is a serious issues like running really lean the cel will continually flash letting u know u could be doing damage to ur cats or other things.See what ur afr are they are very accurate being they use wideband 02,s

I was watching it all the way home. Seemed to stay between 13.5 and 15.

 

[Tyler2386]

About the same here. My stoich afr is between 13.5-14.7 under moderate throttle and 20.0 on decel.

 

[Tommy V]

I was watching it all the way home. Seemed to stay betwe. To 13.5 and 15.

Yea thats lean for a forced induction car,should be in the mid elevens or close to that.Definitely send some data logs to ur tuner.

 

[Tyler2386]

That's lean at WOT, but not under moderate accel. Was your reading at WOT, Guard?

 

[Tommy V]

That's lean at WOT, but not under moderate accel. Was your reading at WOT, Guard?

True throttle postion and boost all matter,thats why i said get some data logs.

 

[Guard5.0]

That's lean at WOT, but not under moderate accel. Was your reading at WOT, Guard?

Haven't been to WOT because I knew I didn't have a tune. Also learned a little while ago that as of right now the Roush CAL is not available at this time so no tune for me. Is your VMP available? I think Lund is waiting for the ngauge to really dig into the Roush. So much for simple:shrug:

 

[Tommy V]

Wow that sucks man,i dont think they should have released them kits with no way to tune,if theirs a problem with the canned tune ur screwed.

 

[Guard5.0]

Pretty much. I'm hearing it's drivable if you stay out of it. Guess I'll wait for Brenspeed or Lund to get the keys to the proprietary kingdom.

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