hey guys im new to the site and have a few ???'s i have an 02 chevy with a 5.3 i had it tuned with the hp tuners thing but since the tune i have gutted the mass air flow sensor cut the bottom of the airbox out and put a k&n drop in airfilter and removed the cats and put 2 cherry bomb extreem mufflers but since i removed the cats it seems like it has lost power does anyone know if it needs to be re tuned?? (i have never changed the spark plugs they are factory and the truck has 90,000miles dont really know if it matters or not) What you think?? thanks guys!

 

I would put a maf with a screen back in there, it is there for a reason. A retune would prob not hurt... Best bang for the buck, BLACKBEARPERFORMANCE

 

too late for the mass airflow sensor its trashed! seems to helped a little bit after i took it out!

 

i would rec. Zippy for a tune. i sold an old pcm w/ a zippy tune to a member here who already had a tune from another popular tuner, whom i wont name because he is very well respected here. he was much more impressed w/ the zippy tune.

 

how much do the diff tunes cost?

 

im just looking for someone to email me an hp tuners file!

 

I'd guess the Cherry bombs are choking it.

 

there pretty well straight through

 

if you gutted the cats you will need a tune to delete the rear o2 sensors. I like Blackbearperformance tunes but I don't think you will find anybody to e-mail it to you..not sure though.. You can e-mail them and ask. I like blackbear because of how he does his tune ( he has you record the vehicle as you drive and uses that to tune it) It seems to make more sense. Also it is time for new plugs bud .. Get the TR plugs

 

ya i had the rear 02sensors turned off so i could remove the cats.. about how much does a tune from them cost?