Supermaxxx Dyno Results
Racer
Joined: Aug 2003
Posts: 281
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From: Clayton North Carolina
I am also going with the Supermaxx system too, 10 rwhp I'm not impessed, although they all claim 35 - 40 rwhp which I don't believe, I am already at 312 rwhp with a A4, blackwing & Borla's will see what I'll get when I install the supermaxx system. I'll be happy if I get half of what they claim.
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Seems kind of low for installing headers. Most people I have talked to state a 20-25 HP gain. I've been thinking about installing these.
Team Owner
Joined: Mar 1999
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From: At the beach in little Rhody
I actually think you did pretty good. If you look at your final number, it is right in line with a header installation, maybe a tad low. I am at about 330 HP with headers, but I also have a very conservative tune.
Do you have the AFR graph that you can post?
Do you have the AFR graph that you can post?
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Drifting
Joined: Jun 2004
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From: Chesapeake Va
I didnt get an AF print out but they hooked it up and it was a constant 11.9, for the second run, and dipped down to 11.7, then back to 11.9 for the 3rd, they say with a tune getting it up near 12.5 could get some more HP.
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Team Owner
Joined: Mar 1999
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From: At the beach in little Rhody
Mine is sitting right at 12:1. The car will lean out on the street, so don't go too lean on the dyno. You are right where I am with the tune as far as AFR and our numbers are very similar so I think you are where you should be. I don't think you will get a ton more HP if they lean it out, but maybe 5-10, just be careful of the final AFR.
Team Owner
Joined: Mar 1999
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From: San Jose/Bear Valley CA
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10-15 rwhp is not much of a gain for what you spent. At this point I would stop buying expensive bolt on's and go straight to the Cam, valve springs and tuning for a real boost in RWHP. You will like the results much better IMO.
VR
VR
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That is kind of low to me too.
That is one of the reasons I went straight to a blower and bypassed other bolt ons. If you figure that headers cost you ~$2000 (with install, dyno and tune), and H/C might be in the ~$4000 range (or thereabouts) and a blower in the ~$8000 range...
I'm waiting to dip DEEP into my engine before I crack it open - forged crank, rods, pistons, springs, valves, heads, cam, intake, oil pump - everything when I do touch it. Or maybe go all out with a 427 (if I can afford it!!!).
Headers are on my bolt on list - but 3.73:1 gears and a higher stall are money better spent (for me) - I have a A4.
But nice mod all the same. Hey, ANY mod is a nice mod.
EG.
That is one of the reasons I went straight to a blower and bypassed other bolt ons. If you figure that headers cost you ~$2000 (with install, dyno and tune), and H/C might be in the ~$4000 range (or thereabouts) and a blower in the ~$8000 range...
I'm waiting to dip DEEP into my engine before I crack it open - forged crank, rods, pistons, springs, valves, heads, cam, intake, oil pump - everything when I do touch it. Or maybe go all out with a 427 (if I can afford it!!!).
Headers are on my bolt on list - but 3.73:1 gears and a higher stall are money better spent (for me) - I have a A4.
But nice mod all the same. Hey, ANY mod is a nice mod.
EG.
Thread Starter
Drifting
Joined: Jun 2004
Posts: 1,372
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From: Chesapeake Va
cam is def on the list, just wanted to get the basic crap done first, I did expect more from the long tubes cat and X, I am happy that the gain was across the curve not just peak numbers, thinking about a 581/224 114 cam, still dont know if I want to go bigger for more HP, and of course the tune.
Melting Slicks
Joined: Aug 2000
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You picked up good power WITHOUT a tune. The car is pig rich. Those long LT's like to run on the lean side. Figure out where you want to go with the car........... head & cam, blower, n20 or whatever and do it once with a final tune. You will be very surprised at the results. Dynatech makes a very good header system, and when you factor in the price, I think it's the best deal out there for LT's. You MUST tune the car.
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Joined: Jul 2003
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From: Tampa Florida GO NOLES!!!
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i have had nothing but problems with my supermaxx's...my car stalls every other day now. Chevy saw the code, and it was for a heated o2 sensor perf left 1 bank 1...seems the o2 sensors are further down the pipes then stock and so they don't read correctly and aren't speaking to the computer right!
Melting Slicks
Joined: Aug 2000
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Originally Posted by spoiled996
i have had nothing but problems with my supermaxx's...my car stalls every other day now. Chevy saw the code, and it was for a heated o2 sensor perf left 1 bank 1...seems the o2 sensors are further down the pipes then stock and so they don't read correctly and aren't speaking to the computer right!
Has your combo been competently tuned? Your figures seem low for your combo.
Last edited by 90 droptop; Dec 12, 2004 at 12:12 PM.