Trouble With Maggie Setup
Thread Starter
Racer
Joined: Nov 2006
Posts: 408
Likes: 1
From: Illinois
Trouble With Maggie Setup
The car is a 2006 C6 Coupe with an EPP blower cam, Full Bassani Exhaust, AFR 205's milled to 65cc's, Maggie MP112, Yank 3000 stall, LPE intake, 60 lb injectors. See the link to view dyno numbers. This is with an unlocked converter. Iv'e seen other cars with this similar setup make 580-600 hp manuals and automatics. I'm running 7.5-8 lbs of boost and around 20 degrees of timing.
http://i64.photobucket.com/albums/h1...s/Corvette.jpg
http://i64.photobucket.com/albums/h1...s/Corvette.jpg
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
The car is a 2006 C6 Coupe with an EPP blower cam, Full Bassani Exhaust, AFR 205's milled to 65cc's, Maggie MP112, Yank 3000 stall, LPE intake, 60 lb injectors. See the link to view dyno numbers. This is with an unlocked converter. Iv'e seen other cars with this similar setup make 580-600 hp manuals and automatics. I'm running 7.5-8 lbs of boost and around 20 degrees of timing.
http://i64.photobucket.com/albums/h1...s/Corvette.jpg
http://i64.photobucket.com/albums/h1...s/Corvette.jpg
On my truck, the 112 was good for 440 and the 122 is close to 500. The motor in my truck is essentially an iron block LS2. I went from a 220 cam to a smaller LS6 cam and actually picked up a little power. Makes boost just off idle and the fuel eco picked up vs the bigger cam. The bigger cam will give you more power if you have the blower to feed it. If not, it will just raise the rpm level where it makes similar power.
It kind of is what it is. If you're looking for significantly bigger numbers, you'll need a bigger blower. Edit: Or find a more "bling" friendly dyno.
Last edited by old motorhead; Jul 18, 2009 at 09:00 PM.
Le Mans Master
Joined: Mar 2006
Posts: 7,838
Likes: 1
From: Valencia '32 Ford 3 window with 615 HP!!!!
St. Jude Donor '06-'09
with above, but 477 rwhp is a little low!I have a 2800 stall,cam,meth,and some other stuff and have a dyno sheet of 550rwhp+
Last edited by 1bdasvt; Jul 19, 2009 at 12:51 AM.
Burning Brakes
Joined: Jul 2006
Posts: 824
Likes: 3
From: Houston, Tx.....'05 Corvette M6 LS3 Magnuson Heartbeat
We both are making +550 on our 112's with similar mods & boost numbers using stock heads & bottom end.
Request another dyno run.
Thread Starter
Racer
Joined: Nov 2006
Posts: 408
Likes: 1
From: Illinois
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Converter was unlocked per original post. That along with dyno variances can easily explain the difference. My quarter mile times were as fast or faster than folks that had 75+ more "dyno" hp. It happens. When your #'s are lower, you pick everything apart to find the problem. Often there aren't any.
Thread Starter
Racer
Joined: Nov 2006
Posts: 408
Likes: 1
From: Illinois
Does anyone else think upgrading to the 122 blower is the answer to my problem? I am running a decent size cam. Am I running out of air? I am running a 2.8 pully and only getting around 8lbs of boost.
Cam specs:
EPP Blower Cam
232/240
595/608
115 lsa
Cam specs:
EPP Blower Cam
232/240
595/608
115 lsa
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
MP122 would give you a nice bump, but not a huge one. Figure 10 to 15% more power.
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Thread Starter
Racer
Joined: Nov 2006
Posts: 408
Likes: 1
From: Illinois
Wow. That's a huge cam for an MP112. Way bigger than the cam in my LS3 with TVS2300. I know you can pick up a lot of low end pull by going with a smaller cam. You might even pick up a little boost and hp in the process. Wouldn't sound near as good though.
MP122 would give you a nice bump, but not a huge one. Figure 10 to 15% more power.
MP122 would give you a nice bump, but not a huge one. Figure 10 to 15% more power.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
I'm assuming you have the 112 and not the 112HH. The difference between the 112HH and the 122 (which is also high helix) wouldn't be quite as much. Give the Magnacharger boys a call. I'm sure they can answer your questions more thoroughly than I can.
Melting Slicks
Joined: Feb 2006
Posts: 2,184
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Burning Brakes
Joined: Nov 2007
Posts: 1,083
Likes: 3
From: Buena Park CA
Sometimes when you "over cam" an engine with a monumental amount of lift you will surely lose a ton of low-end torque. If you have the funds, I would suggest as another poster has that you get a Magnuson 1900 or a 2300 with whatever camshaft they recommend, which is probably "smaller" than what you have.
When the engine is really "lopey" at idle, I must admit it sounds really cool, but you will have very little torque until you wind it up.....which by then, the race could be over.
When the engine is really "lopey" at idle, I must admit it sounds really cool, but you will have very little torque until you wind it up.....which by then, the race could be over.
Thread Starter
Racer
Joined: Nov 2006
Posts: 408
Likes: 1
From: Illinois
Sometimes when you "over cam" an engine with a monumental amount of lift you will surely lose a ton of low-end torque. If you have the funds, I would suggest as another poster has that you get a Magnuson 1900 or a 2300 with whatever camshaft they recommend, which is probably "smaller" than what you have.
When the engine is really "lopey" at idle, I must admit it sounds really cool, but you will have very little torque until you wind it up.....which by then, the race could be over.
When the engine is really "lopey" at idle, I must admit it sounds really cool, but you will have very little torque until you wind it up.....which by then, the race could be over.
I did speak with Magnuson today about upgrading my standard MP112 to a 122 HH. I was told that it would increase it 30 - 50 hp. Anyone think it could be more than that?
I also spoke to the people over at Yank converters. I was told that their converters are atleast 93% efficiant and that there should only be a 10-15 hp difference between an auto and a manual.
Thread Starter
Racer
Joined: Nov 2006
Posts: 408
Likes: 1
From: Illinois
Correct. Mine is a standard MP112. So that being said, I could expect more of an increase due to the fact that I would be getting a 122HH?
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
I'm speaking from the experience of exactly one 112 to 122HH swap and quite a bit of reading. It was good for about 45 more HP. I think the HH blowers are able to spin a little faster before heating up as much vs. the earlier design. I'd bet you can pulley down a bit more with the MP122, up the boost, and still keep IAT's reasonable. If you up the boost and make the IAT's higher, you haven't accomplished anything. Higher IAT's necessitate less timing. Timing is just as important as boost in making power. You might also consider some type of boost cooler. That will cool the intake air a little and allow more timing.
Burning Brakes
Joined: Mar 2006
Posts: 946
Likes: 0
From: Midland, TX........ 550 RWHP/520 RWTQ (A6)
You are running out of air........the M112 is only 1.8 liters displacement. Even with a "big" cam the 112 can only flow so much. If you want more hp, your best bet is to upgrade to the 1900 0r 2300. I've been very happy with my M112 (going on 3 years now), but I would not ry to make any more power then I already have.
Melting Slicks
Joined: Jun 2004
Posts: 3,413
Likes: 278
From: NC
I was at 480/ 480 with a Maggie 112, stock motor, stock convertor, stock exhaust on a 2006 A6.
Added headers on 8 lbs of boost was making 497 rwhp and 537 rwtq through headers, no cats. 11.0x at 128 mph w/ a 1.7 short time.
I believe your cam is not optimal for your setup, but I'm no expert. The hp levels don't look too far off, but your torque seems low to me....
Added headers on 8 lbs of boost was making 497 rwhp and 537 rwtq through headers, no cats. 11.0x at 128 mph w/ a 1.7 short time.
I believe your cam is not optimal for your setup, but I'm no expert. The hp levels don't look too far off, but your torque seems low to me....
Thread Starter
Racer
Joined: Nov 2006
Posts: 408
Likes: 1
From: Illinois
I was at 480/ 480 with a Maggie 112, stock motor, stock convertor, stock exhaust on a 2006 A6.
Added headers on 8 lbs of boost was making 497 rwhp and 537 rwtq through headers, no cats. 11.0x at 128 mph w/ a 1.7 short time.
I believe your cam is not optimal for your setup, but I'm no expert. The hp levels don't look too far off, but your torque seems low to me....
Added headers on 8 lbs of boost was making 497 rwhp and 537 rwtq through headers, no cats. 11.0x at 128 mph w/ a 1.7 short time.
I believe your cam is not optimal for your setup, but I'm no expert. The hp levels don't look too far off, but your torque seems low to me....
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Nice heads are nice, but they might not add a lot to a 112 maggie or even a 122. You have X amount of air that the maggie a capable of pumping. Stock heads will show a little more boost compared to "worked" heads because there is more of a restriction on the intake side of the stock head vs a ported head. Same thing on the exhaust side. A big exhaust port with free flowing headers will help if your blower is capable of supplying more air. If not, the boost will just be less and the power will remain similar. Again, be careful comparing dyno sheets. Dynos are an excellent tool for tuning and for comparing mods before and after. Not good at all when comparing different cars on different dynos on different days.