90 crx hf how can i increase gas mileage? - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 06-08-2008, 08:14 AM   #1
Registered Member
 
Join Date: Jun 2008
Posts: 8
Country: United States
90 crx hf how can i increase gas mileage?

I just bought a 90 crx hf with 144000 miles on it. still has orig. engine (d15b6) and tranny. the only mods on it is a stage 3 racing clutch dc headers and a flow master exhaust with a 4 inch tip. I would like to make it stock again what do you guys think i should do? thanks

tyler
__________________

tbrown4 is offline   Reply With Quote
Old 06-08-2008, 08:25 AM   #2
Registered Member
 
friz's Avatar
 
Join Date: May 2008
Posts: 49
Country: United States
I can't imagine those mods would affect MPG that much.
__________________

__________________
I used to curse when I got stuck behind you guys on a two lane blacktop. If you can't beat em?


friz is offline   Reply With Quote
Old 06-08-2008, 08:45 AM   #3
Registered Member
 
Join Date: May 2008
Posts: 211
Country: United States
Leave the headers and exhaust.. change back to a quiet muffler if you prefer.

Free flowing exhaust will most likely give you a slight mpg boost..
__________________
94 Altima 5 spd.. Stock.. 29 mpg combined with basic hypermiling techniques ..

89 Yamaha FZR400 Crotch rocket, semi naked with only the bikini fairing, no lowers, 60 plus mpg

87 Ranger 2.3 5spd.. Does not currently run..
fumesucker is offline   Reply With Quote
Old 06-08-2008, 09:56 AM   #4
Registered Member
 
Join Date: Jun 2008
Posts: 8
Country: United States
okay thanks. The car also has a cold air intake but it doesnt fit the car. the owner before took it off a lower 90s civic and put it on. you can pull it right off pretty much. is there a cold air intake that would fit for this model? i have looked for some and found a couple but some sites offer them and others dont for the same intake. so i dont know if they really only fit the 1.5l base 90 crx.
tbrown4 is offline   Reply With Quote
Old 06-08-2008, 10:19 AM   #5
Registered Member
 
Join Date: May 2008
Posts: 211
Country: United States
Cold air intakes are good for horsepower but generally bad for mileage..

In fact people are doing the exact opposite and making warm or even hot air intakes to increase mileage.
__________________
94 Altima 5 spd.. Stock.. 29 mpg combined with basic hypermiling techniques ..

89 Yamaha FZR400 Crotch rocket, semi naked with only the bikini fairing, no lowers, 60 plus mpg

87 Ranger 2.3 5spd.. Does not currently run..
fumesucker is offline   Reply With Quote
Old 06-08-2008, 10:40 AM   #6
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Cold air intakes have been reported to increase mileage, I would assume by reducing intake restriction in badly designed systems. Either way, if you're interested in monkeying around with your intake, might as well give it a free-flowing Warm Air Intake.
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 06-08-2008, 10:57 AM   #7
Registered Member
 
Join Date: Jun 2008
Posts: 8
Country: United States
okay thanks tons. so change the muffer and get a warm air intake? anything else i could do to the car to increase mileage? I know I want to change out the clutch to a stage 1 cuz you have to get the car to 2k just to get it to move. and it bogs out if i go under that with the stage 3. Im going to try hypermiling i just read up on that.
tbrown4 is offline   Reply With Quote
Old 06-08-2008, 11:04 AM   #8
Registered Member
 
Join Date: Jun 2008
Posts: 8
Country: United States
I also had another ? have any of you guys used that water for fuel thing? does it really work? thanks

tyler
tbrown4 is offline   Reply With Quote
Old 06-08-2008, 11:20 AM   #9
Registered Member
 
Join Date: Aug 2007
Posts: 107
Country: United States
I don't think bogging under 2k rpms is the clutch. Mine used to do that. It is a CA car. I put the Fed ECU in it and that fixed it. I'm not sure if the old ecu was bunk or not though.

With mine it can start out at 1K in first provided I give it very little throttle until it hits 1.5K then it can be floored
FritzR is offline   Reply With Quote
Old 06-08-2008, 11:36 AM   #10
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
The best part to modify is your driving.

Your clutch could be no good for FE, and a WAI would probably help (though I haven't yet tried one). Be sure to add air to your tires if they're not already at the maximum pressure stamped on their sidewalls (see the tire pressure link in my sig). There's probably other things you can do.

All added up, those modifications won't have anywhere near the effect that changing your driving habits will.

I don't believe in any of the miracle FE products like water for fuel stuff. I may eventually consider a DIY HHO experiment, though.
__________________

__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Current TV spot merckrx General Fuel Topics 1 08-14-2008 07:36 AM
Why did it take me so long to find this place? Baranfin Introduce Yourself - New member Welcome 6 05-31-2008 05:17 PM
Is there a OBDI or OBDII conversion for older vehicles? kozaz General Fuel Topics 3 11-13-2007 08:32 PM
XFi mirror caps? baddog671 General Fuel Topics 4 07-10-2007 03:51 PM
The great news about the EPA's new tests repete86 General Fuel Topics 8 02-07-2007 07:01 AM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 03:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.