as the title says. i was wonderin what is avg mpg range on the motor, this is for peeps with the similar specs , or other peeps with knowledge of this. i need to know city/highway mpg. i'm still running on stock ecu injectors stock intake manifold. you probably want to know the specs of my motor.
b18c1
jdm type r pistons 81.50 bore
head built for high compression
but you guys should know the rest
thanks for advice honda tech members

 

like all motors, it depends on how it's tuned and how it's driven...an answer any more specific would simply be a wild guess...

 

like stated above.

How its tuned and driven greatly affects your MPG. My built gs-r motor still got me roughly the same amount of gas mileage that i would get when it was stock.

 

I have tuned my engine (very similar specs as urs) to run with great mileage (25-26mpg) with vtec running hard or not.... I have also recently done a rich, safe tune that eats thru gas.... so ya... tuning is the key.

 

i haven't tuned my car it will be awhile til get it tuned. i 'm runnin on a stock ecu, but thanks for yall input.

 

on a safe tune for me with skunk 2 pro 1 cams i'm getting 22mpg i don't know free way not on them enough

 

I'm running the same bottom (11.8,GSR head/mugen HG) with a skunk2 mani, Kenji program, on GSR cams in a CX hatch. I get a little over 300 miles on a full 9 gallon tank, around 33mpg. Not too shabby. Once I get my ITR cams in I'll test it out again.

 

'00 em1 w/ CTR cams/pistons, my wife pulled 34mpg one day. i can get over 30 on long trips....but in town, forget it, 25 if i'm lucky

 

hey that koo

 

EK hatch S4C Trans
~12.2:1 C/R
93 octane
Pro2 Cams
30-32 MPG Combined
driven 350+ miles a week and runs 13.1@107

 

does street tuning help with MPG more than dyno tuning?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by realis9 &raquo;</TD></TR><TR><TD CLASS="quote">does street tuning help with MPG more than dyno tuning?</TD></TR></TABLE>

That would really depend on the dyno. If you have something that can produce load that would be best. DynaPack

 

i dont kno when i'm goin to get tuned

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by realis9 &raquo;</TD></TR><TR><TD CLASS="quote">does street tuning help with MPG more than dyno tuning?</TD></TR></TABLE>

The short answer is yes. But you cannot hold load on the street, so it will be difficult. Using a load holding dyno is the perfect thing.... but not the easiest type to find... also expensive. Dyno tuning normally just covers the map for WOT.... where you only go to when floored.... the rest of the map is where the big portion of your gas mileage is determined.

 

what does it mean to hold load? when i got my car tuned i did 2 hours on the dynojet and maybe 4-5 miles on the street driving in 5th gear at a steady speed of 50 mph. I always though that was to get me better MPG. This is crome tuning by the way.

 

Experts feel free to chime in if I don't get this all right ...

Well the tuning you do at 50mph is basically load holding, but for most commutes in metro areas, a great deal of fuel consumption comes from mild acceleration rather than cruising. But only 2 hours on the dyno and 5 miles of street driving ? Unless you are a fairly experienced tuner or really trust the autotune... doesn't sound like much tuning time

When you hold the engine at a particular rpm with load, you can focus on any area on the fuel and ignition map. It's something you can't do precisely on the street, but map smoothing might help (I don't know how well crome can smooth the map).

But if you have the money, time and a tuner... you can get a great combination of cruising mpg and great acceleration (I wish I had access to the dyno and the tuner to get it done for me )

 

19xwhp & 135wtq, s2p1, p&p p72 head, h/i/2.5" catback, 10.8/1 c.r. 525km per tank on the average, 550kms at times. obviously fully tuned.