A friend of mine has an '07 GMC Sierra 5.3 liter gas and was wondering if anyone has used EFI live on a gas truck and what the increase in gas mileage and power was? Was it worth it?
Thanks

Different motor but yes its well worth it. Take all the TM off and bump up timing tables and run high test and you will see noticeable gains. I went from 11-12 freeway to 16.4. In town I tow alot so I dont even check. Power is better than gas mileage anyday IMO.

I have not done it personally but i have read about other people that have. From what i have heard it is deffiantly worth it. The difference is big, with the torque managment taken out(or close to) the seat of the pants feel is amazing. MPG gain all depends on how you drive it and how it is tuned, but i think 2-3 is not far from the truth. As soon as i get a new truck this will be the first thing i do. Tell your friend to do it, it is worth it.

ok thanks, and what other mods do you think he should get?

Exhaust and cai.

thanks, and any particular brand?

GMPP exhaust sounds good

thanks for all the help and input

xcablb7 is tuning my truck saturday, i'll let ya know the diffrence that it makes

ok thanks

i also know someone with the GMPP cai and he said he could tell a difference, small, but still a difference. Plus the nice thing about going with GMPP is warrenty work will not be affected.

xcablb7 is tuning my truck saturday, i'll let ya know the diffrence that it makes

So how did the tuning turn out for you? I know its kinda soon but what gains have you noticed?

a custom tune will do a lot for your gasser...now will you see huge hp gains like a diesel, no...but if you do supporting mods like long tube headers, CAI, exhaust...cam, you'll have around 80hp over stock...theres where Im at roughly...i know for me it put the fun back into drivin my truck, i was able to pass people w/o problems and throttle response was a lot better...i would HIGHLY suggest getting a tune for a gasser

mikey04hd, have you gotten any numbers with your truck tuned now?

mikey04hd, have you gotten any numbers with your truck tuned now?

we didn't get a chance to do it that day:(, it was having a hard time reading the ecm and it was late in the day so we put it off, as soon as we get a chance to do it i'll post up some results

ok thanks man. good luck with it

Im gunna have my tuner tune my 2008 hd with the 6.0. I tow about 7500lbs would removing torque management hurt anything?