jeffreno

Hi, I have an 09 2.2L N/A with Magnaflow 2.25in catback. I'm looking to get a header and catted dp, but I'm worried that I'll lose power by getting a header that has too large primaries and collector... The options I'm looking at all have between 1.5 and 1.75 inch primaries, and 2.5 to 3 inch collector. They include badmab and zzp. The badmab is good price and appears good quality. It's a 1.71in primaries to 3in collector.

My questions are: Will I be losing backpressure if I get the badmab? Is the 1.5in primaries to 2.5in collector the best option, as far as not losing backpressure? Does it even matter, as far as backpressure goes, since I have the 2.25in Magnaflow catback? And, if I got the Badmab header, should I get a 3" dp stepped to 2.5, or a straight 2.5 dp? Or does that even matter? lol

I believe that any aftermarket header and dp is a lot better than stock, and I may be asking this incorrectly about backpressure. Are the smaller headers a better choice for HP vs the larger ones with the 2.2?

Thanks

Ceej

iTrader: (1)

Idk by numbers but I have badmab w/ the zzp downpipe and back pressure doesn't seem to be an issue at all

3" is too much if you're N/A from what I've seen

bluebalt07

iTrader: (8)

I ran the ZZP long tubes with the 3 inch downpipe when my car was naturally aspirated and it gained a good bit of performance. That was with 1.75 primaries and a 3 inch collector which would be the least back pressure you'd find with a header set up and it worked very well I think

LtDanBoostdG5GT

My Old LT had the ZZP LT Headers and 3" DP and 3" all the way back... no issues bud.

jeffreno

But that's what the badmab ends up at, 3"...

jeffreno

So, any opinions on running the badmab to a 2.5in catted dp to my 2.25in magnaflow?

GSDIESEL300

iTrader: (17)

The badmab will be fine. Stick with the 2.5" dp the 3" will be too large for an NA performance gain. The result of the badmab, 2.5" dp, and 2.25" magnaflow should be a pretty nice setup.

bluebalt07

iTrader: (8)

This. Also take into consideration future mods before buying. For instance, if you plan to supercharge in the future, buy something that would optimize that setup. It may not be the most optimal choice for NA but it will still give you some gains

Ceej

iTrader: (1)

Yeah but 3" all the way through will just hurt your performance

LtDanBoostdG5GT

I agree... If you wanna supercharge later on I would buy the longtubes IMO. but the bad-mab is a good setup.. there is no real performance gain on an NA with the longtubes but it sounds awesome IMO.. the shorty sounds great too.. Good Luck

Ceej

iTrader: (1)

Badmab shorty and the zzp downpipe sound awesome

royce777

iTrader: (29)

i have a conservative exhaust so my car isnt loud. im running GM honed manifold, lsj downpipe, and magnaflow catback. sounds good not ricey at all

jeffreno

Cool, ty everyone. I planned on staying NA

royce777

iTrader: (29)

yeah im NA..ask gsdiesel he's heard my exhaust before. i like the gm manifold n lsj dp cause it isnt raspy and ricer

seprus505

The badmab will be fine. Stick with the 2.5" dp the 3" will be too large for an NA performance gain. The result of the badmab, 2.5" dp, and 2.25" magnaflow should be a pretty nice setup.

jeffreno

thanks, that's what i ended up going with. the ONLY bad thing w that setup is how loud it us, especially over 3000rpm

Ceej

iTrader: (1)

Well I just put a 2.5" exhaust and it's loud as ****

jeffreno

What exhaust do you have? resonator? I have Magnaflow w res...