Mac Prochamber

08RoushGT · June 24th, 2009, 12:15 AM

I am looking to get the Mac Prochamber part# PC2105. I still have the stock headers and cats with the Roush axle back exhaust. I have a few questions before I order them.

1. Will I need a tune being that I have a Roushcharger and Roush tune?
2. Is it worth the buy?
3. Are there any gains in power?
4. If I get everyone's blessings, where to purchase the prochamber from?

Give me your opinions please. Thanks

07stanggt · June 24th, 2009, 12:21 AM

the prochamber itself to splice into the stock cats right?

No tune.

Guys have said you can feel it. I felt the splice in x pipe. same thing. but very very slight, its more like the engine just revs better. At your power level i would say the difference would be noticable

gains I would say 3 to 5 hp maybe more since you are blown.

I sell it, or a lot of people sell it. The prochambers themselves could still be had the last time i checked. but they only had 2 and that was two weeks ago. Mac long tubes and any legs for the prochambers are on a very long back order.

bamagt · June 24th, 2009, 12:33 AM

I'll give the Prochamber a ringing endorsement. I can't say I noticed any gains in seat of the pants dyno with the PC alone, but the sound definitely improved. Recently I went from a catted PC and stock manifolds to an off road PC with MAC LT and that I noticed in power and sound........BIG TIME. If you can go off road, I would recommend it. I don't really care for the polar bears anyway.

Good luck finding the MAC stuff, I ordered the LT from BlowByRacing and got their last set about a month ago. The off road legs I ordered directly from MAC and it took'em two weeks.

07stanggt · June 24th, 2009, 12:34 AM

Originally Posted by bamagt

I'll give the Prochamber a ringing endorsement. I can't say I noticed any gains in seat of the pants dyno with the PC alone, but the sound definitely improved. Recently I went from a catted PC and stock manifolds to an off road PC with MAC LT and that I noticed in power and sound........BIG TIME. If you can go off road, I would recommend it. I don't really care for the polar bears anyway.

Good luck finding the MAC stuff, I ordered the LT from BlowByRacing and got their last set about a month ago. The off road legs I ordered directly from MAC and it took'em two weeks.

When did you order the legs?

08RoushGT · June 24th, 2009, 12:41 AM

Rich, can you see if it is available please? It is the one that fits with the stock cats. It is listed on your site for $299. Let me know please

bamagt · June 24th, 2009, 12:42 AM

same time I ordered the LT, about a month ago. I asked MAC about the LT and they said they were on a one month back log. The legs were on a two week back log. And two weeks later they were at the door. I called around and just got lucky with BBR having a set of LT sitting on the shelf.

07stanggt · June 24th, 2009, 12:50 AM

Originally Posted by bamagt

same time I ordered the LT, about a month ago. I asked MAC about the LT and they said they were on a one month back log. The legs were on a two week back log. And two weeks later they were at the door. I called around and just got lucky with BBR having a set of LT sitting on the shelf.

mac sent you legs to the prochamber a month ago? LOL. Thanks.

mynameismike65 · June 24th, 2009, 01:17 AM

GET O/R!!!!!!!!! buy from Rich, the man got me a hell of a deal

08RoushGT · June 26th, 2009, 09:07 PM

Any prices yet Rich? Let me know please

gragra73 · June 27th, 2009, 04:53 AM

Originally Posted by mynameismike65

GET O/R!!!!!!!!! buy from Rich, the man got me a hell of a deal

I agree with this. Every post I have read where the owner goes from stock H to the splice in Prochamber has not been completely positive. Most owners say it almost sounds the same except a little quieter and a little deeper. O/R prochamber and stock H is a big difference in sound. If you want to keep it smog legal, get hi-flow cats welded in.

DiMora · July 9th, 2009, 01:49 PM

Originally Posted by gragra73

I agree with this. Every post I have read where the owner goes from stock H to the splice in Prochamber has not been completely positive. Most owners say it almost sounds the same except a little quieter and a little deeper. O/R prochamber and stock H is a big difference in sound. If you want to keep it smog legal, get hi-flow cats welded in.

Huh? Doesn't the Prochamber replace the stock H?

DiMora · July 9th, 2009, 01:50 PM

Originally Posted by 08RoushGT

Any prices yet Rich? Let me know please

PM me as well please, Rich, with a Mac PC2105 price (Splice-in prochamber used with stock cats). I also have to have cats - emissions testing in Atlanta.

beefmobile · July 9th, 2009, 01:59 PM

Originally Posted by gragra73

I agree with this. Every post I have read where the owner goes from stock H to the splice in Prochamber has not been completely positive. Most owners say it almost sounds the same except a little quieter and a little deeper. O/R prochamber and stock H is a big difference in sound. If you want to keep it smog legal, get hi-flow cats welded in.

Originally Posted by DiMora

PM me as well please, Rich, with a Mac PC2105 price (Splice-in prochamber used with stock cats). I also have to have cats - emissions testing in Atlanta.

gragra73 · July 9th, 2009, 03:40 PM

Originally Posted by DiMora

Huh? Doesn't the Prochamber replace the stock H?

They do replace the stock H. There are two different prochambers for those with shoties or the stock manifold. One splices into the stock cats and the other is an o/r midpipe.

DiMora · July 9th, 2009, 04:32 PM

Originally Posted by gragra73

They do replace the stock H. There are two different prochambers for those with shoties or the stock manifold. One splices into the stock cats and the other is an o/r midpipe.

That is what I thought. I posted the quesiton because the other guy said "prochamber with factory H...and I was thinking it is one or the other.

June 24th, 2009, 12:15 AM	#1
08RoushGT Regular 2008 Mustang GT / Roush 11.51@119 Join Date: Jun 2009 Location: Houma, LA Posts: 132 iTrader: 0 reviews	Mac Prochamber I am looking to get the Mac Prochamber part# PC2105. I still have the stock headers and cats with the Roush axle back exhaust. I have a few questions before I order them. 1. Will I need a tune being that I have a Roushcharger and Roush tune? 2. Is it worth the buy? 3. Are there any gains in power? 4. If I get everyone's blessings, where to purchase the prochamber from? Give me your opinions please. Thanks __________________ M-90, 3.73's, Roush Exhaust, BBR 2.57 pulley, BBR Idler, Steeda CAI, BBK LT's, X-pipe, Afco HE, P-51Tensioner, GT500 Fuel Pumps, 10% OD Pulley, CJ Springs, PH DS, BMR LCA, Line Lock, BMR Adj UCA, BMR Adj. Panhard Bar, BBR smoked headlights

June 24th, 2009, 12:33 AM	#3
bamagt Regular Last Three of VIN 666 13.7@104mph Join Date: May 2008 Location: Alaska Posts: 494 iTrader: 0 reviews	I'll give the Prochamber a ringing endorsement. I can't say I noticed any gains in seat of the pants dyno with the PC alone, but the sound definitely improved. Recently I went from a catted PC and stock manifolds to an off road PC with MAC LT and that I noticed in power and sound........BIG TIME. If you can go off road, I would recommend it. I don't really care for the polar bears anyway. Good luck finding the MAC stuff, I ordered the LT from BlowByRacing and got their last set about a month ago. The off road legs I ordered directly from MAC and it took'em two weeks. __________________ ~ 08 Alloy ~ JLT CAI ~ BBR Tunes ~ Comp Stage II NSRs ~ UDPs ~ MAC LT O/R Prochamber/Violators ~ Hurst STS ~ FRPP 4.10 Gear ~ BMR LCAs ~ CHE Relocation Brackets ~ BMR Adj Panhard ~ Prothane Motor Mounts ~ Coast Drive Shaft ~

June 24th, 2009, 12:41 AM	#5
08RoushGT Regular 2008 Mustang GT / Roush 11.51@119 Join Date: Jun 2009 Location: Houma, LA Posts: 132 iTrader: 0 reviews	Rich, can you see if it is available please? It is the one that fits with the stock cats. It is listed on your site for $299. Let me know please __________________ M-90, 3.73's, Roush Exhaust, BBR 2.57 pulley, BBR Idler, Steeda CAI, BBK LT's, X-pipe, Afco HE, P-51Tensioner, GT500 Fuel Pumps, 10% OD Pulley, CJ Springs, PH DS, BMR LCA, Line Lock, BMR Adj UCA, BMR Adj. Panhard Bar, BBR smoked headlights

June 24th, 2009, 12:42 AM	#6
bamagt Regular Last Three of VIN 666 13.7@104mph Join Date: May 2008 Location: Alaska Posts: 494 iTrader: 0 reviews	same time I ordered the LT, about a month ago. I asked MAC about the LT and they said they were on a one month back log. The legs were on a two week back log. And two weeks later they were at the door. I called around and just got lucky with BBR having a set of LT sitting on the shelf. __________________ ~ 08 Alloy ~ JLT CAI ~ BBR Tunes ~ Comp Stage II NSRs ~ UDPs ~ MAC LT O/R Prochamber/Violators ~ Hurst STS ~ FRPP 4.10 Gear ~ BMR LCAs ~ CHE Relocation Brackets ~ BMR Adj Panhard ~ Prothane Motor Mounts ~ Coast Drive Shaft ~

June 24th, 2009, 01:17 AM	#8
mynameismike65 Regular 2006 GT Join Date: Sep 2008 Location: Milwaukee Posts: 125 iTrader: 0 reviews	GET O/R!!!!!!!!! buy from Rich, the man got me a hell of a deal __________________ 2006 GT Blk/Blk 5 Spd. JLT Intake + Brenspeed Tune Hurst STS Mac a/b Mac o/r Prochamber Tint

June 24th, 2009, 12:21 AM	#2
07stanggt I Post Entirely Way Too Much 2007 GT Join Date: Mar 2007 Location: Ellicott City, MD Posts: 11,951 iTrader: 1 reviews	the prochamber itself to splice into the stock cats right? No tune. Guys have said you can feel it. I felt the splice in x pipe. same thing. but very very slight, its more like the engine just revs better. At your power level i would say the difference would be noticable gains I would say 3 to 5 hp maybe more since you are blown. I sell it, or a lot of people sell it. The prochambers themselves could still be had the last time i checked. but they only had 2 and that was two weeks ago. Mac long tubes and any legs for the prochambers are on a very long back order.

June 26th, 2009, 09:07 PM	#9
08RoushGT Regular 2008 Mustang GT / Roush 11.51@119 Join Date: Jun 2009 Location: Houma, LA Posts: 132 iTrader: 0 reviews	Any prices yet Rich? Let me know please __________________ M-90, 3.73's, Roush Exhaust, BBR 2.57 pulley, BBR Idler, Steeda CAI, BBK LT's, X-pipe, Afco HE, P-51Tensioner, GT500 Fuel Pumps, 10% OD Pulley, CJ Springs, PH DS, BMR LCA, Line Lock, BMR Adj UCA, BMR Adj. Panhard Bar, BBR smoked headlights

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