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I wanted some advice on what to do to my C7 next to get some more power besides going forced induction. I have a '17 Z51 A8, and I have some minor mods such as a drop in Attach Blue air filter, x-pipe, and Range device. What do you guys recommend to do next to get some more power out of it? I am also on a bit of a budget due to some home renovations so I am not trying to spend a buttload to gain like 10hp. Any advice is appreciated.
Headers and X pipe gains are ~40hp. I picked mine up used off a Z06 for $1k, tune cost me $400. Mine are cat delete, I see you live in CA. I think your bigger problem will be compliance approved mods.
Headers and X pipe gains are ~40hp. I picked mine up used off a Z06 for $1k, tune cost me $400. Mine are cat delete, I see you live in CA. I think your bigger problem will be compliance approved mods.
Living in Commifornia, has me limited on doing a lot more on my car. I was also considering going Flexfuel but I would need to detune it before getting a smog check on it.
Flex fuel tune is best HP/$ hands down. Typical gains are 25-30 wheel over 91.
Are there any downsides with E85? I daily the car and I heard your gas mileage gets a lot worse. I have 55k+ miles on it now, would I need to change anything else on it for the flex fuel?
Are there any downsides with E85? I daily the car and I heard your gas mileage gets a lot worse. I have 55k+ miles on it now, would I need to change anything else on it for the flex fuel?
Yes mileage will drop roughly 30% on full E85, but only 17% on E50 and you would get max power benefit on even 50% ethanol. Plus the fuel is cheaper, burns cleaner, and smells better so it's a win win. With the flex sensor the tune would auto adjust after it's setup so you can put in 91 or whatever blend you want and it auto adjust. Zero fuel system upgrades are needed on a NA setup.
Google 'ethanol fuel damage'. There certainly is a down side. Though our cars are prebuilt to handle ethanol, it does not keep it from clogging a neglected fuel system in that the lines aren't prone to corrosion that comes with ethanol fuel. But that doesn't mean cars sitting will not experience gelled ethanol, or even drive ones from suffering long term effect.
I've considered doing flex fuel to mine and making sure I would just run the last few tanks of gas for the season high grade 93 before winter hits and never store it with blended ethanol.
I'd like to hear from someone who has done this for at least 5+ years and live in a climate that stores their car 3-4 months of the year.
I do daily the car and do not store it, so I wouldn't run into that issue correct? Does using 101 octane do anything to the power of the car? I do know a local station that has it, is a blend recommended?
I do daily the car and do not store it, so I wouldn't run into that issue correct? Does using 101 octane do anything to the power of the car? I do know a local station that has it, is a blend recommended?
Daily driving should significantly decrease the issues. People have been daily'ing E85 for quite a while. I do think the majority of issues come from storage. The video linked below explains a lot of where I'm coming from. I've considered doing flex fuel to mine for the gains, but no way I'd let E fuel sit during storage of my car. When gasoline goes bad it turns to turpentine. When E fuel goes bad, you have a problem. I live in northern Indiana where my car sits from November to March.
Please watch the video and draw your own conclusions. Personal convictions is "is it worth it?" I don't chase numbers, but understand wanting more (who doesn't!). I just feel there is noticeable risk and Corvette parts ain't cheap. I remain on the fence, but won't go in blind.
Is E85 plentiful where you are? If not, you might be chained to the few places that sell it. Around here, there aren't that many stations that do sell it.
There are a few stations in a convenient spot near my home and work that sell E85, but from what I understand i can still fill up 91 fully when needed correct?
There are a few stations in a convenient spot near my home and work that sell E85, but from what I understand i can still fill up 91 fully when needed correct?
Are there any downsides with E85? I daily the car and I heard your gas mileage gets a lot worse. I have 55k+ miles on it now, would I need to change anything else on it for the flex fuel?
I ran e85 for about 8 years in my Subaru Legacy GT 5mt. With intercooler, a bigger injectors and upgraded Turbo it made 340whp on cali91 and 375whp on e85 at the same boost level ( 20psi@7000 rpms) .
The downsides are 1st gas mileage. I had a 2.5L 4 cylinder and it would get 10 mpg with normal city driving. We j had to do a 30% fuel enrichment and the other downside was the cold weather starting. I live in socal and if it was cold let in the low 60s of less it would be hard to start.
Daily driving should significantly decrease the issues. People have been daily'ing E85 for quite a while. I do think the majority of issues come from storage. The video linked below explains a lot of where I'm coming from. I've considered doing flex fuel to mine for the gains, but no way I'd let E fuel sit during storage of my car. When gasoline goes bad it turns to turpentine. When E fuel goes bad, you have a problem. I live in northern Indiana where my car sits from November to March
the solution is simple. I ran e85 in my turbo porsche for 7 yrs zero issues. it was never a daily so it wasnt odd for the car to sit for a month again zero issues. if your storing your car for extended times simply run the car as low as possible on fuel fill it with 93 oil your preferred octane and ad stability to the mix. drive it for 20 min Utes to fully blend the mix and park it.
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