abager2

Well, i couldnt take it...i installed my gibson metal mulisha cat back on saturday, and i just re-installed my factory exhaust...truck was running and shifting really strange and was constantly trying to stay in v4 mode...had to drive across town today and it shifted to quick in lower gears and held to long in higher gears when id hit an open stretch of road...im gonna contact hhp in houston and see what options they have,but im in so ill so a trip for a dyno tune is out...maybe a programmer, eliminate v4 mode and try it again later...it sure did sound good though under throttle and at idle..best sounding exhaust ive heard on a small block...just not enough back pressure with the 4" catback without some tuning.

thanks!! will get in touch with them..appreciate the info...wish i had known about them before i ordered my exhaust...

yes it does have a small muffler....the sound is amazing..until v4 happens, then it sounds like a helicopter....may partly be because of the short length of the system..mine is a reg cab shortbed...i havent noticed the crew or ext cab guys saying much about it..after driving it last night and this morning, i cant decide if im keeping it or not...

i just did the gibson "metal mulisha" stainless single catback on my '14 reg cab shortbed...love the sound, but afraid the 4" pipe back into a 6" tip is too much free breathing...seems to lag some on take off..has a bit of a flatspot upon acceleration..not enough back pressure im thinking...i really thought the tip would look stupid but its really not too bad...

looks great...what have you done to level it out??

from what ive seen it is a tough job...but if the service tech does a great job, i will tip him on the side..

antifreeze smell in cab...2014 silverado z71 4wd reg cab std bed...in shop today getting leaking heater core fixed..complete dash is out of truck..intake is off...quite a job...evidently been a problem for many...just hope it all goes back together without squeaking and rattling...im gonna have them check this radiator issue as well.