[hotlap]

[parish8]

I don't think e85 is going to change your maf reading or grams/cylinder. That is all weather.

You don't actually flow more air with e85. the fuel brings in the extra oxygen.

Do you know your exact rim size and offsets? I would love to run the 17" 305 mt on the f14 forgestar wheel.

[Fraxum]

Originally Posted by PRAY

Here are the to best runs.

Killer and those 60's! Which DRs?

I need this mod. And E85 is not that affected by DA? Double killer.

[ULTRAZLS1]

Originally Posted by Fraxum

Killer and those 60's! Which DRs?

I need this mod. And E85 is not that affected by DA? Double killer.

It still is very much so. Just not as much. Its cooling effects help in hotter weather among other things ive read in the past that I cant recall. Some old bomber planes back in the day used to run ethanol to help performance at elevation too.
But higher DA will still play a major role imo

[ULTRAZLS1]

Originally Posted by PRAY

I have heard that DA much below -800 doesn't really matter any more. I will have to test that out. Tim and my buddy Rick Crawford (who is famous in his own right) were telling me that the cooling effect of the E85 is severely negated in cold weather. The incoming air is already pretty cold and I am honestly only 1* of timing over where I am on pump. In some places I am 1* lower. So final timing wasn't a factor. I am sure in the summer time E85 is going to be worth it's weight in gold. No doubt the car has picked up on it. The logs are up .3 g/cyl and my MAF is way up as well. Car is making more cylinder pressure and commanding more air because of it. Great stuff. My only issue right now is that mine is reading out at 77%. So at a real 85% or higher the gains would be much greater.

The only reason this car isn't in the 10's right now is my own fault. I made a hasty error and didn't check my work. Plain and simple. The next time the track is open I will hit it again. I will be on true E85 and have my tune dialed in.

As much as it pains me to say it, I think a ported MSD in this exact scenario would shine. If I could have raised shift points to 6,700+ and taken advantage of all that extra top end shift extension power we would have been deep into the high tens. Add headers to that and this is a 10 sec car in pretty much any weather I am going to see.

My stock converter was actually flashing to 2,700 pretty consistently. But then it comes on hard and there is no more slip. Huge RPM plateau. Pulling through that would have been worth a lot. I am also bringing the shift barking back. But it will be dialed way back. I have some ideas that we didn't have time to try. I will load them up and log them to see what's up. I will report back when I have it all dialed in. If it works it will be best of both worlds.

We are just getting started guys. You will all dominate me next season. It is inevitable.

Make up my mind already.

You looked into porting one yet?

They are expensive but ill buy an msd instead of a CF driveshaft I was planning on if you think its the best combo.

Im also holding back because I know ill cam eventually. And the msd will be great for power when revving up into the 7k range with a cam.

Your ported stock piece is a great unit but im undecided...

[laynlo15]

You can save about 600 by doing a stock intake and use that for something else on your mod list which would be a good start on your cam kit.

[PRAY]

My ported stocker is great. However, it has it's limitations. I can't decrease the runner length and I will only open the runner up so much as to not hurt velocity. So it does really well obviously but I can't gain the top end like a MSD does. The MSD takes a hit in the middle pretty good so I don't think it will 60ft with my manifold at all but once you are out of first and holding above 5K it should show out. I just haven't tested it. If someone had a 3,200 to 3,500 stall the MSD is a no brainer. Cam, I would have to see what the cam gained me and where before I made my decision. The only real thing to do is for me to get my hands on a couple MSD's and run them down the track on the same day.

[PRAY]

Originally Posted by parish8

I don't think e85 is going to change your maf reading or grams/cylinder. That is all weather.

You don't actually flow more air with e85. the fuel brings in the extra oxygen.

Do you know your exact rim size and offsets? I would love to run the 17" 305 mt on the f14 forgestar wheel.

Not trying to dispute you cause I know you know your stuff. But I have tested on three different days with very like to almost identical weather and have logged the gains. I know you don't flow more air with E85 but something is going on. I sent Tim some side by side comparisons on identical days and the E85 was up for sure. I just deleted the dang pictures. I am up .3 g/cyl and it is there longer. The MAF is up as well.

The exact offset is 6" and it is a 9.5" rim. If you get on Race Stars web site they have them denoted for the 16' Camaro and the exact sizes.

[laynlo15]

Parish, if you plan on lowering for some better aero you'll need my custom offsets. Mine are 6.45 backspace which Race Star did for me after the purchase. I tried the 6.80 back space but it was hitting the caliper, so they machined the face of a 6.00 bs and it works perfectly. They will probably have a 6.40 bs in the future so it will work either way, lowered or stock height. Pray was the Rick Crawfords G8GT next to you when you took that picture? Sure looked like his bad boy.

[PRAY]

Yes Sir, that was Ricks car. I think he ran a 10.32@134 on the pass I saw him make. I asked him the other day if he was going to bring the V out but he said he wouldn't have the time to dedicate to it. He had about 10 other cars to tune. There were some monster V's and G8's there. Normally my car causes quite a stir but at this deal no one even looked twice at it or asked a question. Lol.

[laynlo15]

It was probably Rick who rented the track. He was at the Ls Fest and there were about 20-25 G8's there, the most I'd ever seen at any event. I still miss my SC G8GT, that's why I went Maggie again on my SS, just a great set up.

[PRAY]

Yes, it was Ricks rental. We are friends and do work for each other at times. He is an awesome guy and a wealth of knowledge. He is the one who talked me into getting my flow bench and valve seat cutting tools. He has really upped my porting game. He still does my valves. If you want to go fast at the track he is the guy to talk to. Unfortunately I am kind of on my own with this LT platform but all of the tricks transfer. Having guys like Tim and Rick around has been invaluable.

[parish8]

Originally Posted by PRAY

Not trying to dispute you cause I know you know your stuff. But I have tested on three different days with very like to almost identical weather and have logged the gains. I know you don't flow more air with E85 but something is going on. I sent Tim some side by side comparisons on identical days and the E85 was up for sure. I just deleted the dang pictures. I am up .3 g/cyl and it is there longer. The MAF is up as well.

The exact offset is 6" and it is a 9.5" rim. If you get on Race Stars web site they have them denoted for the 16' Camaro and the exact sizes.

That's interesting. There must be more going on than I thought. We will be e85ing an otherwise stock car in a few weeks. I will keep an eye on the maf freq to see if it changes.

I did read somewhere that gas has close to 0% oxygen and e85 is closer to 30% oxygen. i thought between that and the cooling effect was where the extra power came from.

[EFI Tuning]

My g/cyl numbers are well beyond anything I ever saw on E10. I've gone through all of my pre E85 logs and the E85 numbers are consistently up over E10.

Tim