Hi folks,
Now that I got your attention, I thought that I'd share a bit of news with you. As you may know, I've been modding my Bullitt and making multiple trips to the dyno to quantify the actual performance gains from the mods. At the last dyno session I realized that if I was going to get the most potential from my mods that I would need the ability to adjust the air/fuel ratio as well as the timing. Now I have the Steeda timing adjuster and it works fine but the only way to adjust the A/F is to have a custom chip burned on the dyno.
Well, being the engineer that I am, I wanted to be able to do it myself SO.....I designed the MAFterburnerTM.
The MAFterburnerTM is a box of electronics and software that intercepts the signal coming from the MAF sensor, "modifies" it, and sends the "modified" signal off to the EEC. I'll spare you the details of the design work and I'll just get straight to the point. Today I had my first dyno session with the MAFterburner installed and the results were just as theorized. I made six runs total monitoring A/F ratio with a wide-band O2 and an EGT sensor that I installed in my car (Bullitt #5434) and got the following results (all numbers are SAE with CF = 0.96):
Base Run Mods: JBA Headers, Magnaflow X-pipe and cat-back, Steeda pullies and timing adjuster set to 14 degrees (stock MAF and airbox), NO MAFterburnerTM correction!
Base Run(006): 236.2rwhp/275.6rwtq/EGTpeak = 1412.2degF/ A/F below 11:1 from 4100-6000rpm
Run #2 Mods: Added C&L 80mm MAF with K&N, still NO MAFterburnerTM correction!
Run#2 (007): 242.3rwhp/281.1rwtq/EGTpeak = 1426.8degF/ A/F 11.7:1 at 4000rpm, above 11:1 until 5000rpm, below 11:1 from 5000-5750rpm and at 11:1 from 5750-6100rpm
Run #3 Mods: Set MAFterburnerTM to lean mixture by 2% across the entire RPM range
Run #3 (008): 243.6rwhp/283.1rwtq/EGTpeak = 1426.0degF/ A/F = 12:1 at 4500rpm, 11:1 until 5750rpm, and 11.3:1 at 6100rpm
Run #4 Mods: Set MAFterburnerTM to run at 4% lean across the entire RPM range
Run #4 (009): 248.9rwhp/291.6rwtq/EGTpeak = 1411.2degF/ A/F = 12.5:1 at 4000, 11.6 at 5000, 11.5 at 6000rpm
Run #5 Mods: Custom MAFterburnerTM program with goal of maintaining an A/F ratio of 13.5:1 to 4500rpm and 13:1 from 4500-6100rpm
Run #5 (010): 254.0rwhp/298.1rwtq!!!!/ EGTpeak = 1512.0degF / A/F was exactly as programmed!
Run #6 Mods: Detuned MAFterburnerTM slightly to richen mixture from 3500-4000rpm (2% change)
Run #6 (011): 253.6rwhp/296.0rwtq!!!/ EGTpeak = 1516.5degF/ A/F in 3500-4000rpm range was corrected to approx. 13:1.
Whew!! That was a lot of typing. The end result is as follows:
1. The C&L 80mm MAF/K&N bought me 6.1rwhp/6.5rwtq over the stock airbox/MAF with my other mods.
2. The MAFterburnerTM bought me 11.7rwhp/16.0rwtq over and above the gains from the C&L 80mm kit.
3. Total gains for the day: 17.8rwhp/22.5rwtq!!!!!!!!!
I've been working on the MAFterburnerTM with intentions of providing late-model Mustang owners with an inexpensive and reliable alternative to chips. The biggest advantage to the MAFterburnerTM is that YOU would be able to tune you own car to the mods that you have without having to send off for a cookie-cutter chip (these rarely work) or have someone else burn you a dyno-tuned chip. Then if you ever make more mods, all you have to do is go back to the dyno and retune the car yourself.
Well, that's all for now. I'm in the process of working out the manufacturing details for this product as well as setting up an e-commerce website. Things should be ready to go in early spring (shooting for March sometime). Retail price is mostly likely shaping up to be $299.95 (not bad for 11.7rwhp and 16.0rwtq!). In a few days you'll be able to check out a picture of the MAFterburnerTM and the dyno charts for the above mentioned runs. The address will be: http://www.mafterburner.com
I'll be posting the same results over on Corral.net and Stangnet.com but I just wanted to give my fellow Bullittheads the scoop first!
Have a good day!
Sincerely,
Mark Chiappetta
Zone-5 Performance Products
_________________
BLACK BULLITT #05434 - Mods: Steeda Triax & Pullies & Timing adj., JBA Ceramic Shorty Headers, Magnaflow X-pipe w/cats & cat-back, FRRP Aluminum Driveshaft, 80mm C&L MAF(black tube), Conical K&N filtercharger, MAFterburnerTM
<font size=-1>[ This Message was edited by: mjchip on 2002-01-05 17:34 ]</font>
<font size=-1>[ This Message was edited by: mjchip on 2002-01-05 17:39 ]</font>
<font size=-1>[ This Message was edited by: mjchip on 2002-01-05 17:41 ]</font>
Now that I got your attention, I thought that I'd share a bit of news with you. As you may know, I've been modding my Bullitt and making multiple trips to the dyno to quantify the actual performance gains from the mods. At the last dyno session I realized that if I was going to get the most potential from my mods that I would need the ability to adjust the air/fuel ratio as well as the timing. Now I have the Steeda timing adjuster and it works fine but the only way to adjust the A/F is to have a custom chip burned on the dyno.
Well, being the engineer that I am, I wanted to be able to do it myself SO.....I designed the MAFterburnerTM.
The MAFterburnerTM is a box of electronics and software that intercepts the signal coming from the MAF sensor, "modifies" it, and sends the "modified" signal off to the EEC. I'll spare you the details of the design work and I'll just get straight to the point. Today I had my first dyno session with the MAFterburner installed and the results were just as theorized. I made six runs total monitoring A/F ratio with a wide-band O2 and an EGT sensor that I installed in my car (Bullitt #5434) and got the following results (all numbers are SAE with CF = 0.96):
Base Run Mods: JBA Headers, Magnaflow X-pipe and cat-back, Steeda pullies and timing adjuster set to 14 degrees (stock MAF and airbox), NO MAFterburnerTM correction!
Base Run(006): 236.2rwhp/275.6rwtq/EGTpeak = 1412.2degF/ A/F below 11:1 from 4100-6000rpm
Run #2 Mods: Added C&L 80mm MAF with K&N, still NO MAFterburnerTM correction!
Run#2 (007): 242.3rwhp/281.1rwtq/EGTpeak = 1426.8degF/ A/F 11.7:1 at 4000rpm, above 11:1 until 5000rpm, below 11:1 from 5000-5750rpm and at 11:1 from 5750-6100rpm
Run #3 Mods: Set MAFterburnerTM to lean mixture by 2% across the entire RPM range
Run #3 (008): 243.6rwhp/283.1rwtq/EGTpeak = 1426.0degF/ A/F = 12:1 at 4500rpm, 11:1 until 5750rpm, and 11.3:1 at 6100rpm
Run #4 Mods: Set MAFterburnerTM to run at 4% lean across the entire RPM range
Run #4 (009): 248.9rwhp/291.6rwtq/EGTpeak = 1411.2degF/ A/F = 12.5:1 at 4000, 11.6 at 5000, 11.5 at 6000rpm
Run #5 Mods: Custom MAFterburnerTM program with goal of maintaining an A/F ratio of 13.5:1 to 4500rpm and 13:1 from 4500-6100rpm
Run #5 (010): 254.0rwhp/298.1rwtq!!!!/ EGTpeak = 1512.0degF / A/F was exactly as programmed!
Run #6 Mods: Detuned MAFterburnerTM slightly to richen mixture from 3500-4000rpm (2% change)
Run #6 (011): 253.6rwhp/296.0rwtq!!!/ EGTpeak = 1516.5degF/ A/F in 3500-4000rpm range was corrected to approx. 13:1.
Whew!! That was a lot of typing. The end result is as follows:
1. The C&L 80mm MAF/K&N bought me 6.1rwhp/6.5rwtq over the stock airbox/MAF with my other mods.
2. The MAFterburnerTM bought me 11.7rwhp/16.0rwtq over and above the gains from the C&L 80mm kit.
3. Total gains for the day: 17.8rwhp/22.5rwtq!!!!!!!!!
I've been working on the MAFterburnerTM with intentions of providing late-model Mustang owners with an inexpensive and reliable alternative to chips. The biggest advantage to the MAFterburnerTM is that YOU would be able to tune you own car to the mods that you have without having to send off for a cookie-cutter chip (these rarely work) or have someone else burn you a dyno-tuned chip. Then if you ever make more mods, all you have to do is go back to the dyno and retune the car yourself.
Well, that's all for now. I'm in the process of working out the manufacturing details for this product as well as setting up an e-commerce website. Things should be ready to go in early spring (shooting for March sometime). Retail price is mostly likely shaping up to be $299.95 (not bad for 11.7rwhp and 16.0rwtq!). In a few days you'll be able to check out a picture of the MAFterburnerTM and the dyno charts for the above mentioned runs. The address will be: http://www.mafterburner.com
I'll be posting the same results over on Corral.net and Stangnet.com but I just wanted to give my fellow Bullittheads the scoop first!
Have a good day!
Sincerely,
Mark Chiappetta
Zone-5 Performance Products
_________________
BLACK BULLITT #05434 - Mods: Steeda Triax & Pullies & Timing adj., JBA Ceramic Shorty Headers, Magnaflow X-pipe w/cats & cat-back, FRRP Aluminum Driveshaft, 80mm C&L MAF(black tube), Conical K&N filtercharger, MAFterburnerTM
<font size=-1>[ This Message was edited by: mjchip on 2002-01-05 17:34 ]</font>
<font size=-1>[ This Message was edited by: mjchip on 2002-01-05 17:39 ]</font>
<font size=-1>[ This Message was edited by: mjchip on 2002-01-05 17:41 ]</font>