04BlackGmc

iTrader: (19)

I've been rocking my 1 3/4 pacesetters for around 3 years now and have been working great, ran 12.73 NA with them with a few bolt ons and have been still making good numbers and track times with them. At this point in time im trying to pick up some power here and there and really debating on finally selling my pacesetters and making the switch to some Kooks 1 7/8. I'm debating if the power gain is worth the cost. Little over 800 i would spend for new headers and im sure i could sell my pacesetters for 250 or so. Now i haven't dynoed my car on my current pulley i went the 10.55 on but it was 668 with around a psi or so less. To me if i can pick up 20-30HP it will be worth the switch in my book.

Any advice or proven results would be great!

M2W-GTO

Go with the Kooks signature series, which would provide you the best of both worlds. I can't remember where I saw it, but on ls1 gto's they were making about 10-15 more than the pacesetters on NA cars. I think with the swap you could gain close to 25-30 more hp with your setup.

LS1RedZ

iTrader: (19)

I got rid of my pacesetters and went with kooks 1 7/8 caused picked up a F1A. Prochargers love to breath so it would be worth the swap I think along with a cutout. I picked up 70rwhp opening the cutout when I had pacesetter 1 3/4. Didn't get to dyno the new setup cause the motor took a **** on me.

The Alchemist

iTrader: (19)

I'm also wondering what swapping from QTP 1 3/4" to a 1 7/8" header would yeild me. I'm running ~14-15psi through my D1SC with a front mount, so I know it would drop my psi a little, but should pick up power as well. Is it worth it, I don't know.

underpressureWs6

iTrader: (17)

ive been running the hooker 1-3/4 longtubes for 9 years now, im also wondering if switching to 1-7/8 would yield around 30rwhp or so....

SS-ROB

iTrader: (22)

I ran the JET HOT version 1-3/4(several years) and switched to KOOKS 1-3/4 stepped to 1-7/8. Gains were worth the change for me. I picked up 30RWHP & 33RW torque. Debated going straight out 1-7/8, but also kept in mind what future plans would also be. The drop in boost I only lost 1psi. and gained on both sides so to me it was worth it.

The Alchemist

iTrader: (19)

Interesting. Might be worth doing the swap.

I8UR4RD

iTrader: (16)

I think about it all the time. when my hookers get too worn, i will swap to them anyways.

skifreek

iTrader: (2)

I have kooks 1 7/8's i just took off my maggie 112 setup... lemme know if interested

04BlackGmc

iTrader: (19)

Would have to be for a g8 lol.

WS6 SRT-8

iTrader: (18)

Do it! Then let us know the results. I've been wondering the same thing as you.