Pulled on a 2008 VW GTI DSG
Registered User
Joined: Nov 2001
Posts: 1,408
Likes: 0
From: Denver, CO
Originally Posted by 20aeman,Dec 8 2008, 08:59 AM
It's not an issue of flow, it's an issue of cylinder pressure.
it's most certainly a flow issue.. The only reason you're gaining power with E85 is that "Ethanol specific energy at stoichiometric fuel air mixtures is actually higher than gasoline allowing a higher release of energy per lb of air burned than gasoline."
Registered User
Joined: Aug 2007
Posts: 1,287
Likes: 0
From: Cincinnati, Oh
Originally Posted by Riceboi,Sep 28 2008, 02:41 PM
stock for stock, can we take an R32?
Registered User
Joined: Feb 2007
Posts: 433
Likes: 0
Originally Posted by cravnpup,Dec 8 2008, 09:25 AM
it's most certainly a flow issue.. The only reason you're gaining power with E85 is that "Ethanol specific energy at stoichiometric fuel air mixtures is actually higher than gasoline allowing a higher release of energy per lb of air burned than gasoline."
Registered User
Joined: Feb 2007
Posts: 433
Likes: 0
Originally Posted by 20aeman,Dec 8 2008, 03:15 PM
LOLZ. Dude...my car runs off the stuff, and I know exactly what it does. What you quoted is entirely wrong. I have to run 30+ percent more ethanol to equal the same combustion energy as gasoline. Internetz<Experience.
Here is a dyno of my buddy who runs off of E85 to give you an idea of how far we have progressed over the years:
Registered User
Joined: Sep 2003
Posts: 1,258
Likes: 0
Originally Posted by 20aeman,Dec 8 2008, 06:19 PM
Yeah, the usp gti was a huge deal a couple of years ago. Now those guys are playing with MKVs.
Here is a dyno of my buddy who runs off of E85 to give you an idea of how far we have progressed over the years:
Here is a dyno of my buddy who runs off of E85 to give you an idea of how far we have progressed over the years:
Yes, have you seen what they did a little over a month ago with their APR stage 3 MKV??
http://www.youtube.com/watch?v=9C8PbF7XMYU
I don't know of any times yet. I'll be by there tomorrow and see whats going on.
Registered User
Joined: Feb 2007
Posts: 433
Likes: 0
Originally Posted by cravnpup,Dec 8 2008, 04:32 PM
LOL, you'd think if you ran it, you'd know a bit more about it.. You need to run 30% more to equal gasoline AFR's due to the stoichiometric fuel mixture of E85 being about 30% less than gasoline. Man I love how you GTI guys come on here to edumacate all of us.. At any rate show me a K03 car that puts down more than 260whp, and then maybe I'll believe you that it's not a flow issue.
The difference in horsepower at a given lambda between the two fuels is negligible on a 1.8t (or any car with severe airflow limitations).
And it still doesn't change the fact that you need to run more of it to make the same power.
Thread
Thread Starter
Forum
Replies
Last Post