smokinzx14r
Well-Known Member
- Joined
- Mar 2, 2015
- Threads
- 64
- Messages
- 1,591
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- 355
- Location
- ST Petersburg FL
- First Name
- Lee
- Vehicle(s)
- 2015 GT A6 3.55 Gears ..
- Thread starter
- #1
Made the switch from 93 pump to E85..
Well I have seen a bunch of claims from 70 HP gain to as high as 110 HP gain .. I always take these claims with a grain of salt ..
I made no changes to the car other than the E85 and the tune .. Well we did have to upgrade to a twin pump return system ... But I didn't change pulleys and up the boost or add headers Ect ......Drove it on the dyno with 93 pump gas and made one pull to make sure the tune didn't need adjustment for the twin pumps return fuel system ... All was good to go , it made within 4 to 5 HP from the last time it was in for the last 93 tune .. This is the same dyno we used for the last tune .. This dyno is known to all that use it as " The heart breaker" It was 83 deg inside the building with 50+ humidity , pretty close to the same temps as the 93 tune was made .
So being on the " Heart breaker dyno " I didn't really care what the Peak numbers would be .. All I wanted to see was the difference between 93 pump gas and the E85 ...
I had wished for more but we don't always get what we wished for ..
We ended up with a gain of 65 HP and 51 foot pounds of TQ over the 93 pump gas .. Now keep this in mind we only pulled to 7300 , my tuner didn't want to go passed 7300 because I don't have a OPG or timing gear ..I agreed with him on that .. Had we pulled to 7600 I'm sure we would have seen 70 to 80 HP gain and that would fall inline with what others have seen .. OPGs and timing gear are on my to do list for next year , so for now I'm playing it safe and shifting at 7300 ..
Good news the HP line on the dyno chart was still climbing when we stopped at 7300 , and it was climbing at a good slope upward ..
.. So we know we have more HP coming once I install the OPG and timing gear .
I'm happy with the extra 51 TQ in the low end, 3000 up till 5500 is wild .. That should really help the car move out at the drag strip .. I'll find out Weds night test and tune what the gains are ..
The E85 cold starts are a bit longer than the 93 , and warm up time is a bit longer .. I'm fine with that ... Once warmed up it drives great , in fact I think it drives a bit better than 93 once it's at full temps.. Pump 93 here is 2.80 a gallon and E85 is 1.79. I was surprised that I was getting 15 to 16 MPG on the way home from the dyno shop with speeds of 35 to 45 MPH and hitting a few long stop lights .. One of the best parts is the smell , I have no Cats and on 93 pump gas the car stinks !!! The E85 smells fine if I smell it at all ..
Would I say this is a good mod ? Yes I would.. I'm sure I'll like it even more once I can turn the RPMs up to 7600 ! :eyebulge:
Well I have seen a bunch of claims from 70 HP gain to as high as 110 HP gain .. I always take these claims with a grain of salt ..
I made no changes to the car other than the E85 and the tune .. Well we did have to upgrade to a twin pump return system ... But I didn't change pulleys and up the boost or add headers Ect ......Drove it on the dyno with 93 pump gas and made one pull to make sure the tune didn't need adjustment for the twin pumps return fuel system ... All was good to go , it made within 4 to 5 HP from the last time it was in for the last 93 tune .. This is the same dyno we used for the last tune .. This dyno is known to all that use it as " The heart breaker" It was 83 deg inside the building with 50+ humidity , pretty close to the same temps as the 93 tune was made .
So being on the " Heart breaker dyno " I didn't really care what the Peak numbers would be .. All I wanted to see was the difference between 93 pump gas and the E85 ...
I had wished for more but we don't always get what we wished for ..
We ended up with a gain of 65 HP and 51 foot pounds of TQ over the 93 pump gas .. Now keep this in mind we only pulled to 7300 , my tuner didn't want to go passed 7300 because I don't have a OPG or timing gear ..I agreed with him on that .. Had we pulled to 7600 I'm sure we would have seen 70 to 80 HP gain and that would fall inline with what others have seen .. OPGs and timing gear are on my to do list for next year , so for now I'm playing it safe and shifting at 7300 ..
Good news the HP line on the dyno chart was still climbing when we stopped at 7300 , and it was climbing at a good slope upward ..
.. So we know we have more HP coming once I install the OPG and timing gear .I'm happy with the extra 51 TQ in the low end, 3000 up till 5500 is wild .. That should really help the car move out at the drag strip .. I'll find out Weds night test and tune what the gains are ..
The E85 cold starts are a bit longer than the 93 , and warm up time is a bit longer .. I'm fine with that ... Once warmed up it drives great , in fact I think it drives a bit better than 93 once it's at full temps.. Pump 93 here is 2.80 a gallon and E85 is 1.79. I was surprised that I was getting 15 to 16 MPG on the way home from the dyno shop with speeds of 35 to 45 MPH and hitting a few long stop lights .. One of the best parts is the smell , I have no Cats and on 93 pump gas the car stinks !!! The E85 smells fine if I smell it at all ..
Would I say this is a good mod ? Yes I would
.. I'm sure I'll like it even more once I can turn the RPMs up to 7600 ! :eyebulge:Sponsored
Last edited:
addle: I will report on it after Weds night test and tune at the track ..