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Well, we got a chance to do some tuning today. Below is the before and after dyno for my car. The injectors (42lb) are at 94% duty cycle, and fuel pressure is steady at 50psi at wot. This is all on 91 octane pump gas. Below are the mods I had before, and what I have now.
The mods that did not change:
-Full 2.5" dual exhaust into a 2-1 muffler at the rear.(3 mufflers, 2 cats)
-Fuddle 3200 stall converter
-K&N Cone Filter
This is what I had before in addition to the above mods.
-MP112 1:1 rear ratio, 2.9" pulley on the front (11.5 psi)
-Stock throttle body ported
-Stock descreened maf
This is what I have now in addition to the mods up top.
-MP122 1:1 rear ratio, 2.9" pulley on the front (13.5psi)
-UMI 90mm throttle body
-GM 85mm MAF
-Magnavolt
This is a stock engine, stock manifold, stock tranny car. Here is the before and after.
434/460 before
485/456 after
I'm sure some people will be happy, and others dissapointed. Post up what you feel, I'm sure Magnuson will be listening. I have tried to be as straight forward, and honest as possible, as not to sway anyone's opinion. For me, this blower is great. The car pulls very hard, and I'm sure the MPH will be there at the drag strip as well. I should have timeslips on the 23rd.
The mods that did not change:
-Full 2.5" dual exhaust into a 2-1 muffler at the rear.(3 mufflers, 2 cats)
-Fuddle 3200 stall converter
-K&N Cone Filter
This is what I had before in addition to the above mods.
-MP112 1:1 rear ratio, 2.9" pulley on the front (11.5 psi)
-Stock throttle body ported
-Stock descreened maf
This is what I have now in addition to the mods up top.
-MP122 1:1 rear ratio, 2.9" pulley on the front (13.5psi)
-UMI 90mm throttle body
-GM 85mm MAF
-Magnavolt
This is a stock engine, stock manifold, stock tranny car. Here is the before and after.

434/460 before
485/456 after
I'm sure some people will be happy, and others dissapointed. Post up what you feel, I'm sure Magnuson will be listening. I have tried to be as straight forward, and honest as possible, as not to sway anyone's opinion. For me, this blower is great. The car pulls very hard, and I'm sure the MPH will be there at the drag strip as well. I should have timeslips on the 23rd.