Earl’s Automotive, a Kenne Bell Dealer / Installer in Burbank, California is now the proud owner of the first Kenne Bell supercharged ‘03 Cobra to hit 700 rwhp without Nitrous. This gorgeous red Cobra with blue flames hit 700.5 horsepower and a whopping 737 ft lbs. of torque! Note the 730+ ft lbs. of torque all the way from 3000 to 4800 rpm!
Way back in August ‘02 we dynoed our test ‘03 Cobra at 617 rwhp for 5.0 Mustang Magazine. This article, “Snake Bite Hit”, has all the tests and Eaton comparisons. The article reprint can be reviewed on our website at http://www.kennebell.net/media/media-home.htm. That car was completely stock except for a Kenne Bell supercharger at 20 psi, Cool Air Kit, Boost-A-Pump, Boost-A-Spark, and Switch Chip. It made all that power through the stock exhaust, cats and manifolds (no headers), stock MAF, throttle body, pumps, injectors and fuel rails. We decided to stop at 617 rwhp because the stock 40lb (rating at 39 delta psi) injectors were maxed out at 85 psi fuel pressure and 600 rwhp.
Earl’s car ran in the 10's (10.47/133 corrected for altitude at LACR) the first time out with headers, cat back exhaust, X-pipe, big oval throttle body, chip, Focus pumps, Boost-A-Pump, Siemens “55#” injectors and 12" filter at 650hp. After the new tune at Kenne Bell, it made 700 rwhp at 25 psi.
At 20 psi, the car dynoed at about the same hp with headers, throttle body, X-pipe, cat back exhaust and no cats as our original test car with the factory equipment. Our prior back-to-back tests on our original test car indicated no power gain from any exhaust system. Even with no cats and the exhaust system completely removed we saw no gain at 600 rwhp. We measured back pressure before and after removal of the cats. At 20 psi boost, there was 30 psi back pressure just before the cats, then with them removed, it dropped to 15 psi, but strangely enough, there was no power gain. That remains a mystery, even to us - and we’re not the only ones. Again, a good dyno test is worth a thousand opinions. From what we witnessed on Earl’s car, the headers appeared to make little, if any power. We will be conducting a specific, dedicated and accurate back-to-back data logged header test that will be undisputed. Our goal at Kenne Bell is to supply our customers with useful, factual information on what is required to make 700+ rwhp on an ‘03 Cobra.
We learned a lot on Earl’s car. There are piles of test data and information, much of which will be published in upcoming articles in Muscle Mustang and Fast Fords and then reprinted on our website in our “Cobra and Lightning Tech & Tuning Tips”. A full two weeks was devoted to calibrating chips, dyno testing, pressure and flow testing fuel pumps, rails, injectors, filters and inlet systems. Also tested were new technology wires, coils, ignition systems, spark plugs and MAF meters.
Also look for many more posts on our results regarding tuning, fuel pump test reasults of the stock pumps, Focus pumps, Lightning pumps, etc.
Congratulations, Earl!
Way back in August ‘02 we dynoed our test ‘03 Cobra at 617 rwhp for 5.0 Mustang Magazine. This article, “Snake Bite Hit”, has all the tests and Eaton comparisons. The article reprint can be reviewed on our website at http://www.kennebell.net/media/media-home.htm. That car was completely stock except for a Kenne Bell supercharger at 20 psi, Cool Air Kit, Boost-A-Pump, Boost-A-Spark, and Switch Chip. It made all that power through the stock exhaust, cats and manifolds (no headers), stock MAF, throttle body, pumps, injectors and fuel rails. We decided to stop at 617 rwhp because the stock 40lb (rating at 39 delta psi) injectors were maxed out at 85 psi fuel pressure and 600 rwhp.
Earl’s car ran in the 10's (10.47/133 corrected for altitude at LACR) the first time out with headers, cat back exhaust, X-pipe, big oval throttle body, chip, Focus pumps, Boost-A-Pump, Siemens “55#” injectors and 12" filter at 650hp. After the new tune at Kenne Bell, it made 700 rwhp at 25 psi.
At 20 psi, the car dynoed at about the same hp with headers, throttle body, X-pipe, cat back exhaust and no cats as our original test car with the factory equipment. Our prior back-to-back tests on our original test car indicated no power gain from any exhaust system. Even with no cats and the exhaust system completely removed we saw no gain at 600 rwhp. We measured back pressure before and after removal of the cats. At 20 psi boost, there was 30 psi back pressure just before the cats, then with them removed, it dropped to 15 psi, but strangely enough, there was no power gain. That remains a mystery, even to us - and we’re not the only ones. Again, a good dyno test is worth a thousand opinions. From what we witnessed on Earl’s car, the headers appeared to make little, if any power. We will be conducting a specific, dedicated and accurate back-to-back data logged header test that will be undisputed. Our goal at Kenne Bell is to supply our customers with useful, factual information on what is required to make 700+ rwhp on an ‘03 Cobra.
We learned a lot on Earl’s car. There are piles of test data and information, much of which will be published in upcoming articles in Muscle Mustang and Fast Fords and then reprinted on our website in our “Cobra and Lightning Tech & Tuning Tips”. A full two weeks was devoted to calibrating chips, dyno testing, pressure and flow testing fuel pumps, rails, injectors, filters and inlet systems. Also tested were new technology wires, coils, ignition systems, spark plugs and MAF meters.
Also look for many more posts on our results regarding tuning, fuel pump test reasults of the stock pumps, Focus pumps, Lightning pumps, etc.
Congratulations, Earl!
