Her is another Dyno of a N/A Utec tune we just finished on a G35 4 door..The current mods were Crawford headers,Crawford cats,Crawford plenum,and Stillen Air box and exhaust..The first run the A/F we logged was really lean and the car did not make much power, about 240whp and 225 Tq. Also notice where at about 5000rpms the stock ECM pulled timing cause of knock, due to lean conditions caused by the breathing mods..

Well after we smoothed out the A/F to a nice 13.5 dipping to 12.5 and played with some timing advance, we got the following results: about 260whp (on one of the last runs) and 235 TQ..The car felt night and day and the owner was verry happy with the end results.Just some more proof that N/A mods usually dont make much power without tuning.

 

that looks good. i wish someone out here in norcal could tune the UTEC...

 

basically anyone who reads the manual can tune it..lol, just have to know what your doing as far as tunning..

 

Maybe you can answer something for me. What is the difference between UTEC and something like UniChip? What added functionality does the UTEC provide.

Sorry if this has been answered by others. Your results with a N/A car intrigue me. Thanks for letting us know.

 

$$ ?

How much for the entire process, out the door?

 

this is definitely going into my sedan when i'm done modding!!!!

 

Sounds like a great mod, but doesn't the OEM ECU adjust A/F ratios already(although at a much slower rate)? Thanks.

 

IIRC the OEM A/F mapping is based the oem installed intake and exhaust system. Also, I believe there is 2d and 3d maping since I have only been goofing around with the g since last august I am not very familiar with the pcm. The oem tuning is cruder like you had eluded to amg35.

 

More reading on the UTEC to answer all of your questions..

http://www.turboxs.com/more_info.php?ID=217

whole process out the dorr was about $1500

 

very nice gains

 

read somewhere that once you go wot, a seperate a/f map comes on to adjust more fuel, or something like that..........

 

Hey everybody that dyno was my car. Sorry I didn't get a chance to post sooner (works always getting in the way). Anyway not only did I gain almost 20hp and more tq down low but the car runs so much better (smoother) when I really stomp on it. I noticed the more mods I added the rougher my engine sounded at high rpm but the utec and tune cured all of that. Jules at MRC did a really great job and took his time getting everything right.

 

i have a brand new utec for the 04-05 wrx sti up for grabs . does anyone know of anyone who is looking for sti utec for there sti ? let me know

 

How has your gas mileage been affected? Any side effects to adding the UTEC? Thanks.

 

No, no side effects at all. It has been a great mod. It runs so much smoother I think it's even better for the engine. Haven't checked the gas mileage though but, then again, the way I drive I don't expect great mileage.