On3 performance 78/76
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Thread Starter
TECH Fanatic
iTrader: (36)
Joined: Oct 2005
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From: cedar bluff,alabama
Mine is on and running now!!!! WHO HOO!!! I replaced an mp70 with .96ar , The old turbo was out of turbine around 14psi on my truck. Seat of the pants meter says this turbo is making much more power, it wont be dynoed but I will get some track times soon. This turbine seems much quieter than the mp 70.
TECH Fanatic
Joined: Jun 2013
Posts: 1,163
Likes: 16
From: Avon, Ohio
well an update here for you guys
the billet 76/96 on 14psi made 515whp, just like the 76/65 and the 78/75
so there is no power figures with the 78/75 like we wanted but i did find out that something else is wrong with this setup, going to swap the cam next with a LS2 cam since they are not great but they are not terrible, it will let me know if the cam is the problem or if i have to start going thru the driveline
the billet 76/96 on 14psi made 515whp, just like the 76/65 and the 78/75
so there is no power figures with the 78/75 like we wanted but i did find out that something else is wrong with this setup, going to swap the cam next with a LS2 cam since they are not great but they are not terrible, it will let me know if the cam is the problem or if i have to start going thru the driveline
nope have not messed with it yet
its too depressing haha
i am going to do ecu, converter, engine
in that order
side note, my friends car that i tuned that made 540whp on 17psi with a 5.3 and 7875 went nearly 137mph on 21psi
its too depressing haha
i am going to do ecu, converter, engine
in that order
side note, my friends car that i tuned that made 540whp on 17psi with a 5.3 and 7875 went nearly 137mph on 21psi
Teching In
Joined: Jan 2014
Posts: 33
Likes: 2
I run the on3 7875 on my 99 trans am ls1. Two weekends ago I ran 10.1@135 with a 1.6 60'. This is on 15 psi and 10 degrees of timing
I've never dynoed my car though, only street tuned by me on 93 octane with meth
I've never dynoed my car though, only street tuned by me on 93 octane with meth
Last edited by tucn26; Nov 18, 2014 at 03:18 PM.
That sounds pretty good. What was your 1/8 et and mph on that pass?