Ported fast 90/90 swap...*Results*
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From: Westampton, NJ
Ported fast 90/90 swap...*Results* Well I recently swapped out my LS2 intake for a ported Fast 90/90 setup from Tony Mamo on my cam only GTO. I also swapped to 45lb injectors cause i was running out of fuel up top. To make sure i got the most out of it, i Took the car to East Coast Supercharging for a full dyno tune on their new dyna pack. Im sorry to say i dont have a baseline for comparison, from before and after the fast, but i have taken the car to the track before and after and got some pretty good results. Anyways before i get into what she did at the track, heres the dyno sheets from ECS. Keep in mind this is a dyno pack, and supposedly these read like a mustang dyno...id expect around 450+ on a dynojet.
Vids of the dyno run
http://s69.photobucket.com/albums/i6...ECSPulls-1.flv
I know the numbers are just numbers, so i wasnt upset with the 417, especially considering how much the car improved at the track. Last season i was able to run an 11.73 @ 118 1.70-60', in 30* air and a negative 1000+/- DA. I basically took the car right off of the dyno and drove to the track for some real world numbers. Temperature was around 70* (not sure of the DA but it was far from perfect air), and the car was prepped the same as it was back in october. My final results from the track were 11.67 @ 119mph spinning to a 1.71 60'. Now considering the air wasnt the best i didnt expect to beat my old time. This ported fast really carries the car down the track and it really woke the car up all over (not just up top). Im extremely impressed with this piece and would reccomend Tony's services to anyone! Best part is i know i can go back this fall when the negative DA's return for an even faster pass, my guess is its worth at least another 2 tenths and 1.5-2mph, especially considering i wasnt hooking at all cause of a weak diff that needs replacing.
here are the vids of my runs that night
Vids of the dyno run
http://s69.photobucket.com/albums/i6...ECSPulls-1.flv
I know the numbers are just numbers, so i wasnt upset with the 417, especially considering how much the car improved at the track. Last season i was able to run an 11.73 @ 118 1.70-60', in 30* air and a negative 1000+/- DA. I basically took the car right off of the dyno and drove to the track for some real world numbers. Temperature was around 70* (not sure of the DA but it was far from perfect air), and the car was prepped the same as it was back in october. My final results from the track were 11.67 @ 119mph spinning to a 1.71 60'. Now considering the air wasnt the best i didnt expect to beat my old time. This ported fast really carries the car down the track and it really woke the car up all over (not just up top). Im extremely impressed with this piece and would reccomend Tony's services to anyone! Best part is i know i can go back this fall when the negative DA's return for an even faster pass, my guess is its worth at least another 2 tenths and 1.5-2mph, especially considering i wasnt hooking at all cause of a weak diff that needs replacing.
here are the vids of my runs that night
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Joined: Nov 2006
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From: Westampton, NJ
lol yea i figured it wasnt hurting anything but my ET, and i can live with that considering i can drive the car home...lol I just wish it would spin a little less off the line and between shifts (chirping 4th gear with slicks...lol)
Thanks for the compliments!
Thanks for the compliments!
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yes but if you read what i was saying my old PB was in 30* air and this past run was in 70* air. Big difference in DA so i figure it was good for another couple tenths in cooler weather. I was also trapping 1mph faster on average than my old best, i that says something right there. In fact i was going to the track just looking to get back into the 11's, and wasnt expecting to beat my old PB until the fall when the cool air comes back.
car pulls MUCH harder over all and doesnt run out of steam up top like it did before. It'll pull clear to 6800 without any trouble, and judging from my curve i can see why. Definately a noticable improvement over the stock LS2 intake/TB combo. Good luck with your head choice, either way you go im sure you'll be happy, they are both great heads when setup properly.
car pulls MUCH harder over all and doesnt run out of steam up top like it did before. It'll pull clear to 6800 without any trouble, and judging from my curve i can see why. Definately a noticable improvement over the stock LS2 intake/TB combo. Good luck with your head choice, either way you go im sure you'll be happy, they are both great heads when setup properly.
Hate to tell you this but Dynapacks read higher than a Dynojet, mainly because it is dynoing at the hub. They can be calibrated to read lower, but in all honesty the numbers from a Dynapack are usually higher than a Dynojet. EG a car that dynoed 526 on a Dynojet did 563 on a Dynapack.
Dynos are just tuning tools though, get it to the track and see what she does; the trap speed will be as good of an indicator of your rwhp.
Dynos are just tuning tools though, get it to the track and see what she does; the trap speed will be as good of an indicator of your rwhp.
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Thread Starter
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From: Westampton, NJ
yea like i said i went right from the dyno to the track and ran 119mph...other goats running similar traps are putting down 450+. Im just going by what the dyno operator was telling me. Anyways my point wasnt to bitch about low numbers, just wanted to show the curve the new fast gave me, and post up my "real world results" since dyno's can vary so much. IM pretty impressed with it overall.
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yea like i said i went right from the dyno to the track and ran 119mph...other goats running similar traps are putting down 450+. Im just going by what the dyno operator was telling me. Anyways my point wasnt to bitch about low numbers, just wanted to show the curve the new fast gave me, and post up my "real world results" since dyno's can vary so much. IM pretty impressed with it overall.
Your car is putting down a bit more than 417. My car put down 457rwhp/429rwtq on a very optimistic mustang dyno. And on 235s at the track it was a 12.53 at 118.6mph spinning 1rst and 2cd. I need the driver mod or more practice because i,m used to doing 40 rolls. Thanks for your write up about the fast. I,m ordering one on monday with some of Tonys magic port work
Thread Starter
TECH Regular
Joined: Nov 2006
Posts: 444
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From: Westampton, NJ
Your car is putting down a bit more than 417. My car put down 457rwhp/429rwtq on a very optimistic mustang dyno. And on 235s at the track it was a 12.53 at 118.6mph spinning 1rst and 2cd. I need the driver mod or more practice because i,m used to doing 40 rolls. Thanks for your write up about the fast. I,m ordering one on monday with some of Tonys magic port work
