Hey I got a 95 civic si with a 95 gsr swap. The other day I drove 3 hours and calculated that my civic is not even 25 miles per gallon. What can that be? and yes i did not drive it calm all those 3 hours but at the same time I did not kill it or give it too much gas. I was driving like 85-90mph and sometimes 100mph. What could I check to see if it works rite or something?

 

The fact that you were going 100MPH is why you're getting 25MPG. 4-bangers need to work hard to keep your speed up that high. Slow down and you will see better MPG.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by p nut &raquo;</TD></TR><TR><TD CLASS="quote">The fact that you were going 100MPH is why you're getting 25MPG. 4-bangers need to work hard to keep your speed up that high. Slow down and you will see better MPG.</TD></TR></TABLE>

ok well I did not give it hard gas and btw most of the time I went like 75-80 but steady not hard

 

it's cause sacramento sucks! it probably sucked your gas up too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxma22 &raquo;</TD></TR><TR><TD CLASS="quote">it's cause sacramento sucks! it probably sucked your gas up too. </TD></TR></TABLE>

btw sac dont suck how is this what u wrote going to help me with my problem??????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rotascircuit &raquo;</TD></TR><TR><TD CLASS="quote">

btw sac dont suck how is this what u wrote going to help me with my problem?????? </TD></TR></TABLE>

reeeeeelax, i was just kidding i'm from sac too


and to answer your post....

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rotascircuit &raquo;</TD></TR><TR><TD CLASS="quote">
Hey I got a 95 civic si with a 95 gsr swap. The other day I drove 3 hours and calculated that my civic is not even 25 miles per gallon. What can that be? and yes i did not drive it calm all those 3 hours but at the same time I did not kill it or give it too much gas. I was driving like 85-90mph and sometimes 100mph. What could I check to see if it works rite or something? </TD></TR></TABLE>

that's y you're not getting good gas mileage.

 

slow down

 

i was getting like 20 mpg then i changed my fuel filter and that helped alot

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spody02 &raquo;</TD></TR><TR><TD CLASS="quote">i was getting like 20 mpg then i changed my fuel filter and that helped alot </TD></TR></TABLE>


thanx dude

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by p nut &raquo;</TD></TR><TR><TD CLASS="quote">The fact that you were going 100MPH is why you're getting 25MPG. 4-bangers need to work hard to keep your speed up that high. Slow down and you will see better MPG.</TD></TR></TABLE>

x2

take a look at your RPM when you're doin 80-100 as compared to 55-60. take into consideration higher rpm = more gas consumption. 3 hours of consistent 3500+ RPM as opposed to 2500rpm is a MASSIVE difference. take the same trip doin 55 or 65 the whole way, you'll notice a drastic change.

::edit:: or just get a much longer 5th gear and keep your 1-4 the same, if you're really that concerned about it. you'd be cruising at 80mph with 2000rpm but it'd work hell of a lot harder to get up to that 80 unless you take 4th to it. just a thought.

 

I'm pretty sure there's no 5th gear in B-series that will see 80mph at 2k rpm haha...I had an LS tranny with the longest 5th of the b-series and at 80 that was pushing between 3500-3800 or so probably.

Definitely slowing down is about the only thing that will up the gas mileage considering the way it was driven. take the lead out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jking93teg &raquo;</TD></TR><TR><TD CLASS="quote">I'm pretty sure there's no 5th gear in B-series that will see 80mph at 2k rpm haha...I had an LS tranny with the longest 5th of the b-series and at 80 that was pushing between 3500-3800 or so probably.

Definitely slowing down is about the only thing that will up the gas mileage considering the way it was driven. take the lead out </TD></TR></TABLE>

hey how can I get 35-38rpms like u? get a ls final gear?

 

slowing down from 70 to 60 improves your gas mileage by 15% approximately. RPMs aren't the biggest factor, its the wind drag associated with the higher speeds thats the big part. 25MPG is hella good for those speeds. that 31MPG figure is calculated at 55 to 60 MPH average.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94VTECoupe &raquo;</TD></TR><TR><TD CLASS="quote">slowing down from 70 to 60 improves your gas mileage by 15% approximately. RPMs aren't the biggest factor, its the wind drag associated with the higher speeds thats the big part. 25MPG is hella good for those speeds. that 31MPG figure is calculated at 55 to 60 MPH average.</TD></TR></TABLE>

QFT. slow your roll. keep those speeds up and you'll have other problems than 25mpg (in)efficiency.