Do i need a re-Tune for LT's ?

[280whpZ71]

I just orderd the pacesetter LT's for $420 shipped.. they'll be here soon, but i was wonderin would i need to retune the truck..

my truck has been tuned usin HP tuner/Dyno at a local shop, but i asked the owner if i need to re-tune it after LT's are in and he said "no need"

So, do i just save up for another tune/dyno and force him to tune it...

any help wold be appreciated.

Cheers!

[Zick]

Depends, some vehicles run fine after installing LTs and some run bad and need to be tuned.
I guess since you already ordered them is to just install them and see how it runs. If it runs bad, then get a retune.

[farmtruc]

I try to run the pcm's I do about 12.5-12.8a/f ratio, so if you add headers, it's not always necessary to get a retune. Your truck might set a misfire code, and if it's tuned on the edge it may need just a tad bit of gas on the topend.
You'll need the cats and rear O2's turned off if you're taking those off.


allen

[280whpZ71]

thanx for replying Zick and allen.

So, i'll just wait till i get em on the truck and see what happens..

The cats and "check engine light" have been takin out from my first tune.

I hope no misfire code happens.