Maggie Pulley Swap - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SmokedSS · 07-26-2012, 08:39 PM

Question for the techinal experts... I have a maggie with LT, CAI and no cats on an auto. Tuned it safe and landed on 490 rwhp. I have read the charts on boost change per pulley change and have recently changed from the stock 3.8 to a 3.4 which is claimed to give me 10psi of boost @ WOT. My question is staying safe on my tune how much hp gain could I expect to see from the pulley change? Then I added the alky meth injection. How much hp gain could I expect to see from that mod staying safe on the tune but tuning for the meth?

Supercharged SS · 07-26-2012, 08:42 PM

Quote:

Originally Posted by SmokedSS

Question for the techinal experts... I have a maggie with LT, CAI and no cats on an auto. Tuned it safe and landed on 490 rwhp. I have read the charts on boost change per pulley change and have recently changed from the stock 3.8 to a 3.4 which is claimed to give me 10psi of boost @ WOT. My question is staying safe on my tune how much hp gain could I expect to see from the pulley change? Then I added the alky meth injection. How much hp gain could I expect to see from that mod staying safe on the tune but tuning for the meth?

On 93 with meth, a 3.4 pulley and 10 psi my car made 545/550 to the wheels.We were tuning for the meth then. Run race gas if you want to push the car. It's not wise to use the meth for fuel.

SmokedSS · 07-26-2012, 09:18 PM

SuperchargedSS are you saying 545/550 is a safe number or did you back it down after the dyno? If so how much of that was from the meth?

Supercharged SS · 07-26-2012, 09:36 PM

Quote:

Originally Posted by SmokedSS

SuperchargedSS are you saying 545/550 is a safe number or did you back it down after the dyno? If so how much of that was from the meth?

It was safe. I wasn't worried about the internals or any of that. We didn't back it down. It went 10.99 at 125 and I drove it all over the place. I don't know how much HP was from meth but later on the meth quit and I lost the engine. Use race gas.

SmokedSS · 07-26-2012, 09:55 PM

I am tuned on the safe side and with the 3.4 and meth only @ 527 hp. I believe the meth is mostly being used to lower my IAt's and not get aggressive on the tune. A/F is around 11:1. It is a daily driver. What do you mean "use race fuel"?

Supercharged SS · 07-26-2012, 09:59 PM

Quote:

Originally Posted by SmokedSS

I am tuned on the safe side and with the 3.4 and meth only @ 527 hp. I believe the meth is mostly being used to lower my IAt's and not get aggressive on the tune. A/F is around 11:1. It is a daily driver. What do you mean "use race fuel"?

If you want to get more aggressive you can fill the car with race gas and run more timing. I have a pump gad tune and a race gas tune. Just don't beat the car without the race gas in it.

jrpxxii · 07-26-2012, 10:16 PM

Quote:

Originally Posted by SmokedSS

I am tuned on the safe side and with the 3.4 and meth only @ 527 hp. I believe the meth is mostly being used to lower my IAt's and not get aggressive on the tune. A/F is around 11:1. It is a daily driver. What do you mean "use race fuel"?

This is what I prefer to use VP C-16

BLACK10 · 07-27-2012, 12:28 AM

when you use meth on a centri, you are cooling the already boosted and inter-cooled air. on the maggie you are spraying before the air is compressed and cooled by the water/heat exchanger, so the iat's are not lowered nearly as much as a centri would see. as most tuners of pd blowers will agree, the biggest limiting factor for making consistant power is the heat :(

now, add a cam to your L99 and you will see the rwhp increase

BLACK10 · 07-27-2012, 12:31 AM

Quote:

Originally Posted by Supercharged SS

It was safe. I wasn't worried about the internals or any of that. We didn't back it down. It went 10.99 at 125 and I drove it all over the place. I don't know how much HP was from meth but later on the meth quit and I lost the engine. Use race gas.

just curious, was it tuned based off of iat's? timing wise?

Supercharged SS · 07-27-2012, 12:36 AM

Quote:

Originally Posted by BLACK10

just curious, was it tuned based off of iat's? timing wise?

I believe the meth was brought in on boost. So, as you already know, it had timing thrown at it when the meth was brought it. A better meth kit and it would have lived.

BLACK10 · 07-27-2012, 12:50 AM

Quote:

Originally Posted by Supercharged SS

I believe the meth was brought in on boost. So, as you already know, it had timing thrown at it when the meth was brought it. A better meth kit and it would have lived.

ahh i see

SmokedSS · 07-27-2012, 06:45 AM

In reference to post #8 if lowering IAT's is the limiting factor between centri and maggie would installing a Super Chiller help? I am not ready to spend the money on a cam now I am looking into having a Stall convertor and cooler installed.

BLACK10 · 07-27-2012, 08:47 AM

It would probably help. You would then need to think of maybe converting to an 8 rib drive setup

SmokingSS · 07-27-2012, 10:03 AM

I have the 1:1 rear cog with 3.4 front pulley, LT headers no cats, CAI with the meth. Plan to install the Jannetty supper tensioner. If I also installed the super chiller to lower IAT's would it be possible to get 550 hp and still be safe on tune? I have a ZL1 fuel pump and currently tuned around 11:1 A/F WOT.

07-26-2012, 08:39 PM	#1
SmokedSS Guest Drives: 2011 2SS / RS A6 Join Date: Oct 2011 Location: Moving On Posts: 464 View My Garage	Maggie Pulley Swap Question for the techinal experts... I have a maggie with LT, CAI and no cats on an auto. Tuned it safe and landed on 490 rwhp. I have read the charts on boost change per pulley change and have recently changed from the stock 3.8 to a 3.4 which is claimed to give me 10psi of boost @ WOT. My question is staying safe on my tune how much hp gain could I expect to see from the pulley change? Then I added the alky meth injection. How much hp gain could I expect to see from that mod staying safe on the tune but tuning for the meth?

07-26-2012, 09:18 PM	#3
SmokedSS Guest Drives: 2011 2SS / RS A6 Join Date: Oct 2011 Location: Moving On Posts: 464 View My Garage	SuperchargedSS are you saying 545/550 is a safe number or did you back it down after the dyno? If so how much of that was from the meth?

07-26-2012, 09:55 PM	#5
SmokedSS Guest Drives: 2011 2SS / RS A6 Join Date: Oct 2011 Location: Moving On Posts: 464 View My Garage	I am tuned on the safe side and with the 3.4 and meth only @ 527 hp. I believe the meth is mostly being used to lower my IAt's and not get aggressive on the tune. A/F is around 11:1. It is a daily driver. What do you mean "use race fuel"?

07-27-2012, 12:28 AM	#8
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	when you use meth on a centri, you are cooling the already boosted and inter-cooled air. on the maggie you are spraying before the air is compressed and cooled by the water/heat exchanger, so the iat's are not lowered nearly as much as a centri would see. as most tuners of pd blowers will agree, the biggest limiting factor for making consistant power is the heat :( now, add a cam to your L99 and you will see the rwhp increase

07-27-2012, 06:45 AM	#12
SmokedSS Guest Drives: 2011 2SS / RS A6 Join Date: Oct 2011 Location: Moving On Posts: 464 View My Garage	In reference to post #8 if lowering IAT's is the limiting factor between centri and maggie would installing a Super Chiller help? I am not ready to spend the money on a cam now I am looking into having a Stall convertor and cooler installed.

07-27-2012, 08:47 AM	#13
BLACK10 Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,585	It would probably help. You would then need to think of maybe converting to an 8 rib drive setup

07-27-2012, 10:03 AM	#14
SmokingSS Drives: 2011 2SS L99 RS Join Date: Nov 2011 Location: Baton Rouge, LA Posts: 27	I have the 1:1 rear cog with 3.4 front pulley, LT headers no cats, CAI with the meth. Plan to install the Jannetty supper tensioner. If I also installed the super chiller to lower IAT's would it be possible to get 550 hp and still be safe on tune? I have a ZL1 fuel pump and currently tuned around 11:1 A/F WOT.