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Looking For Help With Fuel System Upgrades...Looking to go to E85.

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Looking For Help With Fuel System Upgrades...Looking to go to E85.
Old July 25th, 2020, 01:07 PM   #1
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Looking For Help With Fuel System Upgrades...Looking to go to E85.

Sorry for all the new threads, but in the midst of a few upgrades on my GTS and looking for some help.

I'm looking to overhaul my fuel system so I can make the switch to e85 and being new to the Viper world I'd like feedback/suggestions on who makes what parts so I can put together a kit....Here is what I'm in need of:

-Fuel Rail Kit (Can be bare rails/rail brackets...I can do my own lines and fittings)
-Dual Pump Hanger Kit

My plan is:
Dual 525lph pumps
1000cc Injectors
All new -an lines and fittings from pump hanger to rails
Aeromotive 1:1 Regulator
New Rails
Dual Pump Hanger

If anyone can help me source those 2 things or give me options/links I would greatly appreciate it.
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Old July 25th, 2020, 04:12 PM   #2
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Old July 26th, 2020, 09:36 AM   #3
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Curious as to why you wanna switch to E85.
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Old July 26th, 2020, 01:04 PM   #4
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Originally Posted by Chuck 98 RT10 View Post
Curious as to why you wanna switch to E85.
e85 has quite a few benefits and here a just a few...

1. Resists detonation...much cooler burn temp...allows you to run more boost on supercharged/turbocharged applications (My car is Paxton equipped)
2. Cheap form of "race gas"....has an equivalent octane rating of basically 108.
3. Due to resistance of detonation will normally allow more timing as well....all depends on setup. For example on my CTSV with just e85 tune on same boost we picked up 65whp with 4 more degrees of timing.
4. Cleans engine combustion chambers...when you pull apart an engine on e85 generally the combustion chamber will be super clean...no carbon build up.

A few disadvantages...
1. Need to "maintain" fuel system much more...filter changes are important as e85 is a dirtier fuel and can gum up and clog things when it sits
2. Need 20-30% more of it so need bigger fuel pumps and injectors in most cases
3. Pump e85 can vary on ethanol content....some stations can be as low as e50 at certain times of year so tune can need tweaking if it is far off from where you initially tune it.
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Old July 26th, 2020, 07:51 PM   #5
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Yeah, I've heard all that. Seems like a lot of trouble for very little benefit.
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Old July 29th, 2020, 11:57 AM   #6
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RSI has all the stuff you are looking for and their prices are usually decent. They have had issues in the past but I have had good luck with them the last few years.
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Old July 29th, 2020, 02:20 PM   #7
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Yeah, I've heard all that. Seems like a lot of trouble for very little benefit.
60+whp is a pretty nice gain as well as happier/safer engine combustion....torque increases are a little better than HP normally as well. 93 octane with forced induction can get dicey quick if you actually lean on it.
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Old July 29th, 2020, 02:20 PM   #8
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RSI has all the stuff you are looking for and their prices are usually decent. They have had issues in the past but I have had good luck with them the last few years.
I'm currently talking with them....seem to be very helpful so far so that's a good sign.
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Old July 30th, 2020, 09:37 AM   #9
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I highly doubt you'll get 60hp. Unless you're boosted or going much higher compression a little timing won't gain you that much. I bet you see 10-15hp.
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Old July 30th, 2020, 10:14 AM   #10
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I highly doubt you'll get 60hp. Unless you're boosted or going much higher compression a little timing won't gain you that much. I bet you see 10-15hp.
Mine has a Paxton on it....so should be worth at least 60whp...Im going to add 3-4psi and should still have room to increase timing for those power gains as well...honestly I'm hoping for closer to 100whp from the switch to e85.

For NA you are correct....10-30whp is what most V8 Ls-based cars I've tuned have seen depending on their setup....still not bad increase and what I consider "safer" for the engine as well as long as you aren't already over it's mechanical capabilites.
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Old August 6th, 2020, 07:48 AM   #11
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Mine has a Paxton on it....so should be worth at least 60whp...Im going to add 3-4psi and should still have room to increase timing for those power gains as well...honestly I'm hoping for closer to 100whp from the switch to e85.

For NA you are correct....10-30whp is what most V8 Ls-based cars I've tuned have seen depending on their setup....still not bad increase and what I consider "safer" for the engine as well as long as you aren't already over it's mechanical capabilites.
Well yeah with boost it'll make a huge difference as E85 is pretty much 105 octane. I run 10.5:1 static on my 427 with 16psi on E85 and it makes ~1200whp.

You can probably run more then +3-4psi over what you're running on 93, probably more like +6-8psi with conservative timing.
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Old August 6th, 2020, 07:58 PM   #12
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Well yeah with boost it'll make a huge difference as E85 is pretty much 105 octane. I run 10.5:1 static on my 427 with 16psi on E85 and it makes ~1200whp.

You can probably run more then +3-4psi over what you're running on 93, probably more like +6-8psi with conservative timing.
Is this 1200whp on a Paxton?
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Old August 7th, 2020, 12:05 AM   #13
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Is this 1200whp on a Paxton?
If you look in his sig Im guessing it's his LSx Corvette with a Procharger F1X on it.
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Old August 7th, 2020, 11:54 AM   #14
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If you look in his sig Im guessing it's his LSx Corvette with a Procharger F1X on it.
Correct, but I do have a paxton I was thinking about tossing on my GTS.
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Old August 12th, 2020, 06:44 PM   #15
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Unless you have a stand alone Flex Fuel capable tuning system...you will be chasing your tune every time you fill up. Good luck with that as you go BOOM. You run the razors edge like you want, the tune needs to be spot on...especially regarding the fuel. The unknown ethanol content of E85 REQUIRES a FLEX FUEL capable ECU...that why they exists and is why its called flex fuel. But it sounds like you gonna do what you gonna do so enjoy.

I was just in Wisconsin the past two weeks (Rhinelander area) and I do love how you guys have the 91 non-ethanol pump gas for all your recreational toys...Best I see in Tampa is 89 octane non-ethanol. But that is a separate story...
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Old August 12th, 2020, 09:02 PM   #16
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That flex fuel ethanal shit was all the rage right after 9/11. That's nearly 20 years ago. It was tempting back then but it doesn't seem to have caught on much. I imagine there's an E85 club somewhere still pushing for it. Electric is all the rage now.
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Old August 13th, 2020, 06:15 AM   #17
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I love the performance upside of E85...don't get me wrong...but the lack of knowing what you get at the E85 pump just doesn't work for me....plus the crappy mileage for the 99% of the time you don't have your foot mashed to the floor (when you actually need the benefit). Eh...that's why I loved a proper W/M injection set-up for boosted applications.
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Old August 13th, 2020, 07:08 AM   #18
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I'm running an AEM Infinity on my Paxton car, wired and tuned with $60 flex fuel sensor. The Thorntons on Brandon BLVD sells E85.

https://ecumasterusa.com/products/wh...gn=sag_organic
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Old August 13th, 2020, 07:55 AM   #19
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My 427 C6 is tuned on E85 with flex fuel on the OEM ECU. Works great, I'm sure its the same with the AEM. I like that I don't need to mess with meth/water and I can just drive it. Fuel economy when you're not on it isn't that terrible, but again who drives a 1000+hp car and doesn't keep their foot in it? lol
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