Read this a couple of different places. I may be getting a Crawford plenum soon and read that it is necessary to reflash the ECU to keep from running super lean. Does this mean I need to just reset the ECU or send it to TS? I'm not gonna do it if it means I'm gonna have to send my ECU to Technosquare for a month. Too much money, too much downtime. I am off base with this or is it true?

 

not sure....i did...but i only gained a few hp from it and alot of torque...not worth it until you get exhaust headers i beleive...

Ben

 

FWIW, I have the crawford plenum and cats and haven't done the reflash (mostly because I'm a 2004.5 ULEV car). I may be running lean, I don't know. I do have a power gain. I'm sure (or I would hope at least) that a reflash would help the car more.

 

I wouldn't think it is necessary but it might be helpful. I'm most likely getting a plenum too and i dont plan on getting a reflash. I will just get it tuned when i go FI

 

Well I am getting my headers installed at the same time so maybe the reflash isn't a bad idea. Sucks cause I cannot afford $600 and there is no way I can disable my car by taking the ECU out. It's my only set of wheels. I'm having my work done at Crawford Z Car so maybe they can give me some advice.

 

let us know what advice they give you

 

The only reason you would "need" to reflash is if you are running too lean. You will need a dyno with A/F ratio measurement to know. I wouldn't think a plenum by itself would cause a lean condition, but only a dyno will tell. I have plenum, headers, CAI and exhaust and I am not running lean at all, so I don't "need" a reflash. I may get it for other reasons (higher redline, speed limiter removed, a little bit higher idle, etc.) but for $600 I am not in any rush. If I were running very lean, I would be in more of a hurry....

 

I agree no reflash required. It is worth the reflash for the extra gains you will get through the gears not to mention the car will probably do 180 mph with a reflash.

 

I was definitely running lean after my mods. Technoquare did it. Take it out, overnight it to them on a monday and you will probably have it back by thursday.

Get ALL mods done before the ecu so you do not need to go back for another "re-flash" if you decide to go for it....

 

You'll be fine... even with all my mods I'm still on the stock flash.

 

Good. I was really dreading having to ship that thing off.