Boosted and running 93 pump gas
But to answer your question, no i do not put any additives in my gas. The producers put plenty in there already. Maybe if theres something that will for sure raise the octane i would but imo its not worth my time to research
As said, there a bunch of things that go into how much "boost" you can run on pump. Your really worried about detonation, but that is tied things like IAT, compression, cam, RPM..... I used to run 25 on my DSM before I started with meth. I have run 15 on stockish 5.3's. I dont doubt one bit that you could run 20+ on the right combo (big cam, lowish compression, high RPM) And no, dont run fuel treatments..... too hard to keep the % consistent.
I would say to keep timing at peak you should start running meth at 12 psi. If u use more boost u will have to lower timing and probably not make any more power than at 12 psi and peak timing. In other words you can run more boost but probably not make more power.
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On The Tree
Joined: Nov 2011
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Sorry fellas for being vague, but thanks for the post so far.
It's a 376 with forged internals and 10.1. Made 17psi thru an F1A on pump 85. I have a flex fuel sensor and the car seems to run better on 93, but I've not had a chance to dig into the logs yet, to see how the engine is liking it. The seat of the pants, she seems to love pump 93 much better.
It's a 376 with forged internals and 10.1. Made 17psi thru an F1A on pump 85. I have a flex fuel sensor and the car seems to run better on 93, but I've not had a chance to dig into the logs yet, to see how the engine is liking it. The seat of the pants, she seems to love pump 93 much better.
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Thread Starter
On The Tree
Joined: Nov 2011
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If it’s running better on 93 than e86 something is wrong. My car is flex fuel and it’s just the opposite. Doesn’t run bad on 93 but with a full tank of E it’s runs so much better.
Without meth I ran the car on 93 at 700whp before I added it. Car makes 850-860 on 93/meth and 932 on e85.
Without meth I ran the car on 93 at 700whp before I added it. Car makes 850-860 on 93/meth and 932 on e85.
If it’s running better on 93 than e86 something is wrong. My car is flex fuel and it’s just the opposite. Doesn’t run bad on 93 but with a full tank of E it’s runs so much better.
Without meth I ran the car on 93 at 700whp before I added it. Car makes 850-860 on 93/meth and 932 on e85.
Without meth I ran the car on 93 at 700whp before I added it. Car makes 850-860 on 93/meth and 932 on e85.
I know now it’s 14 on 93/meth and 16 on e85. We can get crazier on corn but no need to right now. Atleast we know there is plenty room left.
Thanks guys. I'm at 9 psi now with peak timing of 13 on 93. AFR in boost is low 11's and 82ish% duty cycle on the injectors. This is with a 4.25" blower pulley thinking I will go with a 4.1" pulley soon so maybe 11 psi? I'll take out a couple degrees at that point and watch it close.
Thread Starter
On The Tree
Joined: Nov 2011
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It certainly makes more power and the responsiveness is great on E85, but driveability is night and day better with 93. Without any tuning changes, the car goes into gear smoother, starts up better, and is smoother driving on the highway. I've been chasing a dead spot in my pedal and based off of feel alone it seems a little better with 93. The odd part is the dead spot is not showing up on the logs, but I can feel it in my foot and can get it to do it most of the time.
Thread Starter
On The Tree
Joined: Nov 2011
Posts: 102
Likes: 0
Thread Starter
On The Tree
Joined: Nov 2011
Posts: 102
Likes: 0
Thanks guys. I'm at 9 psi now with peak timing of 13 on 93. AFR in boost is low 11's and 82ish% duty cycle on the injectors. This is with a 4.25" blower pulley thinking I will go with a 4.1" pulley soon so maybe 11 psi? I'll take out a couple degrees at that point and watch it close.