What's your gas mileage decrease after port and polish?
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'06 750Li Sapphire/Creme
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Originally Posted by Pizza4Everyone
what's gas mileage decrease, and horsepower gain after port and polish?
#4
- Doc
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Originally Posted by Pizza4Everyone
If you look closely, they're some people who's done this.I found at least 3 or 4. I was just curious to ask.
matching the heads and lower intake
on my 05 Accord 6MT's engine build.
(among other things...)
I would have thought the engine
would become more efficient not
affecting or even increasing mpg.
Using the stock ECM I expect
a small decrease because of the extra
fuel supplied for the extra half liter
displacement.
The efficiency will be apparent on
the dyno.
#5
'06 750Li Sapphire/Creme
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Originally Posted by Pizza4Everyone
If you look closely, they're some people who's done this.I found at least 3 or 4. I was just curious to ask.
#6
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Originally Posted by ndabunka
Hmmm, OK then why didn't you just PM them directly rather than throwing it out on the forum? trying to run up your post count?
#7
I can say that on our race car- after porting and polishing on a different motor:
we could run dual 48 weber sidedrafts and got about 6 mpg- we calculated laps per gallon, also known as- can I make it to the next yellow or do I run out on the back stretch---far far away from help
we could run dual 48 weber sidedrafts and got about 6 mpg- we calculated laps per gallon, also known as- can I make it to the next yellow or do I run out on the back stretch---far far away from help
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#8
Team Owner
During normal driving I doubt it will hurt gas mileage at all. At WOT, you can now use the extra air provided by the ported heads so mileage might be a little lower. For what it's worth, on my other car with ported heads and a ton of other mods gas mileage on the freeway is better than stock.
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