ROW Chip for low octane fuel-
#1
Three Wheelin'
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Cheers- I was wondering if anybody had a ROW de-tuned chip for a 95 ECU that allowed the 993 to run on lower octane fuel-? I think Porsche used these in Africa and other places where the fuel was dodgy.. It's rather simple to make a piggyback duel-boot EPROM, a single switch could choose between the lower octane EPROM and the higher- check this Eprom duel boot If you have a chip, I'd like to borrow it so I can burn one. I'm gonna be driving across the country this summer.. this could save tons of cash with the price of gas.. (it's not like I need the extra power the higher octane gives me in Montana ;-)
Coleman-
Coleman-
#5
RL Community Team
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Even with the chip, I wouldn't run lower octane fuel just to save a few bucks. The long-term damage to your engine could be very $$$$. Just my .02.
#7
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
You don't need the chip. If you run 93 or 91 octane you can turn the switch on the DME to a lower setting. I'm sure there's a post on this board somewhere. There's posts on everything on this board !
Peter R.
Peter R.
Trending Topics
#9
Technical Guru
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by Coleman
Wait, wasnt that switch (5 or 6 postion potentiometer inside the ECU) only on 964's and maybe some 94 993's? I think it's not on the newer 95 motronic.
Originally Posted by coleman
I think Porsche used these in Africa and other places where the fuel was dodgy..
#10
RL Community Team
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I would second the notion of calling up Steve W. for his take on this. It is an intriguing idea, but lower octane in a 993 always makes me nervous. These cars really want to drink 93+, unfortunately around the NW, we only get really crappy 91. Keep us posted about what you find out.
#12
RL Technical Advisor
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by Geoffrey
With proper programming, you can run these engines on 87 octane.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
These engines become VERY lethargic when programmed for crap gas.
#14
Addict
Rennlist Member
Rennlist Member
Join Date: Jun 2001
Location: Lat: 47 Deg 26.848N Lon: 122 Deg 21.341W Seattle
Posts: 2,021
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I'm glad that is cleared up...sounded like a false savings to me. All there was available in Montanabaun was 91 and I would have prefered 93 for my high speed runs there (don't try this at home and no animals were harmed etc, etc...disclaimer after disclaimer).
TomF...91 only in Seattle. Me thinks you meant 92. Also there are several places to get 94. Cenex in Auburn and Black Diamond. Also, there is Trick Racing gas in Auburn to blend to 93 if you want. Still, you have to go to Auburn to get it.
TomF...91 only in Seattle. Me thinks you meant 92. Also there are several places to get 94. Cenex in Auburn and Black Diamond. Also, there is Trick Racing gas in Auburn to blend to 93 if you want. Still, you have to go to Auburn to get it.