Mac O/R prochamber FTMFW!

astronut1885 · Jun 12, 2008

As some of you may have read in the tech forums, I recently started feeling the need for an O/R pipe after watching a similarly modded GT with that being the only difference make 25 more RWHP than me on the dyno. I grabbed a BBK O/R X pipe, and very quickly didn't like the sound. The gas mileage went up, the butt dyno also saw increases, but I wasn't happy with it. I then stumbled across a Mac O/R Prochamber that was mislabeled on Ebay and got it for 50.00 +100.00 shipping. Score! I put it on today, and now I am ! It sounds nice and tame when you're idling or cruising, exactly what I wanted, but when you romp it, FTW! The install went much smoother than my last attempt when I rounded the passenger side nuts trying to install the X pipe and had to flat-bed the car to my local shop. I had one of these on my H/C/I'd 87 (my last car), and loved it then too. All I can say is for anyone looking into a new midpipe, Prochamber is the way to go!

02nightmaregt · Jun 12, 2008

My BBK o/r x is the shat. You must have gotten a shatty one.The only place i've ever heard anyone say that they liked the prochamber is on this site. I'm happy it worked out for you man. You whip is clean as hell, glad to hear your cars voice has cleared up!

Tim2002GT · Jun 12, 2008

02nightmaregt said:
My BBK o/r x is the shat. You must have gotten a shatty one.The only place i've ever heard anyone say that they liked the prochamber is on this site. I'm happy it worked out for you man. You whip is clean as hell, glad to hear your cars voice has cleared up!

Really? It seems to be pretty popular on all the forums that I frequent. To the OP, glad you like it! That is one hell of a deal for a Pro-chamber!

Gearbanger 101 · Jun 12, 2008

Tim2002GT said:
To the OP, glad you like it! That is one hell of a deal for a Pro-chamber!

Ohhhh, I dunno....I don't consider $150 for a used Prochamber with no warranty "a hell of a deal"?

astronut1885 · Jun 12, 2008

huh? What kind of warranty would I need? I used paypal, so if he screwed me, they'd go after him, and I saw in the pics exactly what it was. These things go 320 new. I'd say it's a deal.

Tim2002GT · Jun 12, 2008

Oops! I didn't see the $100 shipping charge! Okay, it's a good deal! I got mine used for $160 shipped.

astronut1885 · Jun 12, 2008

That's pretty standard on this size stuff, I shipped the PC from my old 87 for the same amount. Even still, for 150, I'm happy. I paid 200 for the x pipe, and a set of BBK "tuned-length" shorty headers that will eventually get installed when I have a better reason to drop the K member, or I pay a shop to do it. I also got a set of MIL eliminators with the prochamber for the 150, and I don't need them since I have an X cal II, so I'm selling the X pipe, along with the MIL elims, in the classifieds for 200.00. I know the MILs are getting hard to find thanks to the gov. I figure if I can recoup 200 from 390 (had to pay the shop 40 for 02 extensions when they did the X) out of pocket, I've made out like a bandit if I get a pro chamber and headers for 190.00

Gearbanger 101 · Jun 12, 2008

astronut1885 said:
huh? What kind of warranty would I need? I used paypal, so if he screwed me, they'd go after him, and I saw in the pics exactly what it was. These things go 320 new. I'd say it's a deal.

Well, Mac product have a tendancy to warp out of shape a little once they've been heat cycled a few times. Also, if one of the flanges is slightly out of round, it won't seal properly....so yeah, warranty does come in handy. And paypal certainly isn't going to go after someone for that. Also....$320 new!?! When, back in 1998 when they first came out?

Try $265.53 with free shipping http://www.lmperformance.com/4571/50.html

or $251.55 http://www.jdsperformance.com/index.asp?initemuid=1215&fcmd=item&inmake=0

or $229.95 http://www.online-racer.com/mac_pro_chamber.htm

or $219.95 http://www.speedconcepts.net/product_info.php?products_id=109

If you're happy with what you payed, then great....I'm extatic for you. But like previously stated....$150 is a good deal, but not an outstanding one!

astronut1885 · Jun 12, 2008

check ebay for the prices, unless I'm nuts. Also, it's a 2 piece design, so if anything warped, it could still be tweaked. It doesn't sound like it's leaking at all, but I did torque the crap out of everything down there and use a FoMoCo gasket.

astronut1885 · Jun 12, 2008

Honestly, the listing was for free shipping, but then the seller emailed me with a few hours to go and said it was a mistake. Since I knew a prochamber was too good to be true at 50, but that I could basically sell the X pipe for what I would spend on the PC, then it was worth it to me to just agree to pay shipping. Do I think he soaked me a tad on the shipping due to the low sell price? Yeah, but since it works as good as a new one, and it's one of the older coated ones, I think 80 saved over retail is a good deal, especially when it'll go toward my next mod: gears.

bullitt_2620 · Jun 13, 2008

I think 100 for shipping was a little much, but I love my P/C and wouldn't trade it for anything because of the unique sound it has, half h half x. To each his own dont regret it if you like it. Now post up some clips

flstang65 · Jun 13, 2008

gotta love that ebay shipping

d98gt · Jun 13, 2008

I also got my prochamber off of ebay

I paid $100-$110 with shipping due to him listing it wrong

Mossberg · Jun 13, 2008

Prochamber is teh sex!!!

astronut1885 · Jun 14, 2008

Indeed sir.

mransr · Jun 14, 2008

it's too bad they stopped making the ProChamber with cats...

astronut1885 · Jun 15, 2008

I don't think they stopped making the catted PC, I think they're just on hold right now because of material shortages. Either way, Ebay is your friend

HercFE · Jun 15, 2008

Anyone have a prochamber with a magnapacks? I had a bassani O/R X on it for about a week and it was obnoxiously loud, had to take it off.

StangYellow · Jun 15, 2008

astronut1885 said:
As some of you may have read in the tech forums, I recently started feeling the need for an O/R pipe after watching a similarly modded GT with that being the only difference make 25 more RWHP than me on the dyno. I grabbed a BBK O/R X pipe, and very quickly didn't like the sound. The gas mileage went up, the butt dyno also saw increases, but I wasn't happy with it. I then stumbled across a Mac O/R Prochamber that was mislabeled on Ebay and got it for 50.00 +100.00 shipping. Score! I put it on today, and now I am ! It sounds nice and tame when you're idling or cruising, exactly what I wanted, but when you romp it, FTW! The install went much smoother than my last attempt when I rounded the passenger side nuts trying to install the X pipe and had to flat-bed the car to my local shop. I had one of these on my H/C/I'd 87 (my last car), and loved it then too. All I can say is for anyone looking into a new midpipe, Prochamber is the way to go!

Wait until a few months from now when your drivers side flange loosens, or the paper gasket blows up on the pass. side. You will be searching "where can I find fully threaded studs for my manifolds"

Exhaust does sound nice, but every year I'm under the car tightening the bolts that were once swimming in Loc-Tite

Gearbanger 101 · Jun 15, 2008

mransr said:
it's too bad they stopped making the ProChamber with cats...

Ahh, for all the small bodies high flow cats available now, it's nothing to just buy a set and have them welded in yourself. Half hours labour and you're golden.

Mac O/R prochamber FTMFW!

astronut1885

02nightmaregt

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