MX-3.com

Dont have a engine in the car, but I was running a stock bodied mx3 with a amp and sub box for weight adders. ebrake was not rubbing and I was running 5w40 synthetic

i am using heavy weights for race car longevity, synthetic 75-140 for the gear box and 20w 50 for the motor, seems to be a happy little car with these weights i'm sure if i went to lower viscosity could gain like 5-10 wheel hp but i was tired of burning stuff up quickly and seems to work for me. also my car weighs 2450 lbs some room for improvement. also a side note when i was getting 25 mpg i had 4 tires non mounted, 1 full size spare, tool chest, full size jack, jackstands and chemicals and other misc car parts probably more closer to 3000lbs or so with me in the car

my hwy fuel economy is down because i rev so high. 205 40 17 tires, the overall diameter of the tire is smaller then my stock 205 55 15 ones. it revs a noticeable amount higher and my hwy gas mileage is down because of that. k8 for now but maybe your tires are too small like mine. i can blame everything on the car till my face goes blue for my bad gas but in the back of my head i know its an issue with my right foot.

well forst off put your bloody cat back on, cuz you grand grand grand children will be paying for clean air because you wanted .25hp on on you 180 nothing horsepower car, second about fuel milege
take a can of seafoam and seafoam the car http://www.youtube.com" onclick="window.open(this.href);return false; search word seafoam, and theforget about regular, 30mpg+easy, shift at 4 grand, and keep the foot off the gas when cruising, tap it, almost like cab drivers do, i used to deliver pizza and i was getting better fuel milege then a toyota tercel

projectzemx3 wrote:my hwy fuel economy is down because i rev so high. 205 40 17 tires, the overall diameter of the tire is smaller then my stock 205 55 15 ones. it revs a noticeable amount higher and my hwy gas mileage is down because of that. k8 for now but maybe your tires are too small like mine.

Those are what I'm running, but I've also got a ZE too.

Sorry to bump old thread...

I have a KLZE straight neck

KL31 cams
Running 98 octane fuel
No cat
Car not running so great at the moment (not so powerful)
Gear changes strategically (put in 5th at 20kmph if going on massive downhill)
10W50 oil

So far got about 350KM and have just under a 1/4 of a tank. I hope to hit 400 before it reads empty, which requires usually about 35L to fill.

For Americans - I hope to get 250 miles off about 9 gallons. 27 miles to gallon is what I am kind of getting with the ZE. Almost the same if not better than the K8.

Nd4SpdSe wrote:
My setup is a KL01 Curved-Neck ZE. KL36 ECU with a JE50 VAF, changed to a Probiantor in a K8 ECU, modified-to-fit OBX headers with new 02 sensors, 2.5" crush bent exhaust with a Magnaflow high-flow cat and no resonator, stock FPR with a low-pressure Walbro 255LPH fuel pump. Original Mx-3 tranny with Mx-3 flywheel. Usually running Sonoco 94, or the highest octane I can get.

How can you have a low pressure walbro pump?

Must be nice, I get around 200 miles per gallon (turbo untunned driving like i stole it)


When it comes to power tho, who cares about gas mileage right? lol

WhiteFinish wrote:

Nd4SpdSe wrote:
My setup is a KL01 Curved-Neck ZE. KL36 ECU with a JE50 VAF, changed to a Probiantor in a K8 ECU, modified-to-fit OBX headers with new 02 sensors, 2.5" crush bent exhaust with a Magnaflow high-flow cat and no resonator, stock FPR with a low-pressure Walbro 255LPH fuel pump. Original Mx-3 tranny with Mx-3 flywheel. Usually running Sonoco 94, or the highest octane I can get.

How can you have a low pressure walbro pump?

Cause one exists.

There's the 255LPH HP (High-Pressure) WAL-GSS342 and the Non-HP (if you want to call it that) WAL-GSS-317

Maybe calling it a low-pressure pump isn't correct, but it's not a high-pressure. The HP's are known to blow the stock FPR. Most don't been to know that there are 2 version of the 255LPH

Aaah... nice to have learned something again

But what are the advantages and disadvantages?

hgallegos915 wrote:Must be nice, I get around 200 miles per gallon (turbo untunned driving like i stole it)


When it comes to power tho, who cares about gas mileage right? lol

WTF?

WhiteFinish wrote:Aaah... nice to have learned something again

But what are the advantages and disadvantages?

Good Q. The advantage to the non-HP is that you can use your stock FPR and not blow it up

Solo, if it makes you feel any better, I'm averaging about 9mpg.

That's city, of course, with constant hard driving. KL-31/ZE with a millenia intake. New plugs, wires, etc. Headers, mostly stock catback. No A/C. OBD-II K8 ECU with JE50 vaf. Yes I know it's awful; I just ordered a KL-02 VAF and AFPR to see if I can lean it out.

It's so rich right now I'm fouling plugs.

I literally get about 170km on a 50L tank.

So.. hope that helps.

nightfire wrote:Solo, if it makes you feel any better, I'm averaging about 9mpg.

That's city, of course, with constant hard driving. KL-31/ZE with a millenia intake. New plugs, wires, etc. Headers, mostly stock catback. No A/C. OBD-II K8 ECU with JE50 vaf. Yes I know it's awful; I just ordered a KL-02 VAF and AFPR to see if I can lean it out.

It's so rich right now I'm fouling plugs.

I literally get about 170km on a 50L tank.

So.. hope that helps.

OUCH!! Man that sucks, hope you get it leaned out soon. I know my first ZE swap on the stock K8 ECU was horrible, I was getting about 12mpg I think.

When would your fuel economy be better?
When driving with vris1 and 2 open or closed?