GsrJake

iTrader: (4)

i think ive seen this around but im not 100% sure does everyone recommend replacing the fuel pump relay with the one from evo x performance parts?

TheBlade

iTrader: (1)

It says you have an 08 GSR, I'd suggest it. I'd suggest replacing the OE fuel pump relay on any 08-10 Evo, just because racecar

stryderlis

iTrader: (17)

So the relay doesn't need to be replaced for 2011+ evo X?

NFSLancerRA

iTrader: (8)

If it is blue, no it is fine. The relay has been revised twice. Both earlier models are black and are no good.

hass

mines was bad sounded like salt shaker when i took it. under load my car would backfire and feel like its out of fuel

gregalmighty

iTrader: (1)

I was looking at mine the other day, I believe it was green, is this one of the revised versions? It's a 2011 gsr

acidtonic

iTrader: (1)

My 2012 GSR still has a black one.

Doesn't look like the new good black one either. But I'm not 100% sure.

Wish I simply knew what to buy and replace it with. I hate having a "good black" and a "bad black" part since I'm doubting its the good one.

alex the great

My 2011 came with the old black relay! So everyone should check it for sure just to be safe!

EAGLE 5

+1 my 2012 also has a black relay. I don't know if it is the good one or the bad one.

momostallion

iTrader: (1)

yea it's kind of confusing cause it seems to have gone full circle.

i believe the original fuel pump relay was black (part MR588567)

due to issues with the FP relay failing, mitsu dealerships were replacing the black relay with a green relay (mitsu part 8627A011).

then an official TSB called to replace all the green relays with a blue relay (mitsu part 8627A024) due to cold start issues. the FP relay was not included in this for some reason.

i have a 2012, it came with a black NAIS branded MR588567 relay for the fuel pump. i have no idea if it was revised but it's not worth finding out.
the rest of the relays are green again, not blue. i do have the newer grey MFI relay.

it seems the best thing to do is buy the SSP relay kit (OMRON MR122409) and the grey MFI relay.

good post with locations:
http://www.evoxforums.com/forums/sho...&postcount=377

good post with differences in the old relays:
http://www.evoxforums.com/forums/sho...&postcount=467

ssp relays package:
https://www.evolutionm.net/forums/ev...y-package.html

TheBlade

iTrader: (1)

My 11GSR has the OE black relay and while datalogging WOT on the dyno, I was at 10.2:1 AFR. It was common for me to have soot on the back bumper too.

I in no way would say that if you have an 11+ not to have your fuel pump relay inspected or have your X datalogged for it to be working properly. But, I'm pretty sure by 2011 models the issue had been cleaned up behind the scenes at Mitsu.

Wideband AFR gauge. #1 best mod you can have a turbo performance car. If you're relay is failing, at WOT you'll be dangerously lean.

jwongx27

iTrader: (1)

i got a 2013 evo x and i couldnt turn on my car today (cold start ) it took 3 tries to get it running... i just checked i have the green one....
=\

01CBR929

iTrader: (8)

Well... if the relay has failed it shouldnt have anything to do with your cold start. When the relay fails it just stays at constant 7.5v setting... so therefore when you are driving under heavy load it will be lean b/c it fails to switch the fuel pump voltage to 12.5 as it should.