Formula/LS1

I read the stickies on exhaust combos that are available. My question is, "Do you need a re-tune if you swap Y-pipe loudmouth catback to a set of Bullets or equivalent? Thanks

memphis24

you probably dont "need" too but if u change things sometimes a tune will definitely help. Bein that tunes are expensive i usually wait till i'm at a good stopping point to let my guys tune the car.

brian_rs/ss

nah...wait till you actually change something of more impact. i'm in the middle of changing my set up, i'm doing 799 heads, intake/tb, 4" exhaust, 28 lb injectors. I will need a tune.

memphis24

agreed. basically what i was tryin to get across lol. hows that cam workin for ya brian? thinkin of gettin somethin similar. dont want nething wild

brian_rs/ss

well depending on your wants/needs i would reccomend the 224r or 228r for anyone looking for a torquey street beater DD. if your car isn't a DD i would say the torquer v2.

memphis24

right now its still a dd. Maybe after my next deployment ill buy a diff DD and i can go bawls to the wall with it.

brian_rs/ss

^thats exactly my thought, i deploy to trashcanistan this coming winter. i will probly do something a little more hairy and then tackle the suspension and rear end.

memphis24

just got axles gears n carrier put in mine. basically i just put a bandaid on it lol. till i break upwards of 400hp i should be fine. my unit is supposed to head that way in the winter as well maybe ill see ya there lol

brian_rs/ss

for sure, i am with 1st BN 23rd marines 4th mardiv. u?

memphis24

1/10 , 2nd mar div. over at lejeune lol

brian_rs/ss

i got a couple buddies over there. including an ex gf

im in houston tx ATM.

memphis24

yeah nc changed their registration law. now u have to have a inspection to buy tags...so my cars sitting in the driveway till i can register it back home lol.

brian_rs/ss

aw that suxxxx. thats how it is here too...but i have my ways around it

memphis24

yeah. has something to do with my readiness codes. been drivin it for a month or so and still no readiness codes. i got by the visual inspection its the dang readiness codes i'm waitin on.

David Q

I had my car tuned after H/C/I install with factory mufflers, now after I installed the Dynomax bullets the car idles really high. It also "bucks" more now than it did before. I think it needs an updated tune.

memphis24

possible. crazy to think a simple muffler would do that

brian_rs/ss

hmm i didn't think about idle but yeah i could see where that might be a concern.

Formula/LS1

After reading all the threads I'm not sure if there was a conclusion to my question. It seems like it got off track throughout the thread. Soooo ... is there any agreement to Tune or Not to tune after the install of Bullets with just turndowns? Thanks again for any input. By the way, SEMPER FI to all you Jarheads. 1st. Div. 2nd. MARINES 1969-1973 OOOORAH !!!!!

memphis24

Unless you are doing anything major like heads cam or even headers I wouldn't tune it. Cat back exhaust shouldn't alter the way your car runs to the point that you NEED to tune it.
but that's just my opinion. Some ppl may disagree.

Formula/LS1

Thanks for the info. Very much appreciated.