Fuel Mod Questions

[BaddAssGst]

I just saw forced performance is doing there 18g cartridge so that's what I'm going to run with. My question: do I really need the 255 pump or can I get away with the 190? I was hoping to just use the 190 so I don't have to get a FPR. Also, do 650s sound like a good injector for the turbo? I already have an AFC so after that I should be done..

Off topic question - how beneficial is a manifold? i'm still on the 1g (uncracked) but would it benefit me to go with the evo3 or slowboy manifold?

 

[Jason84]

you could get a walbro 255 you dont have to get the high pressure one and just dont rewire it.. should be good on that..

and another minor upgrade you could do is just get an AFPR $135 from summit fuel rail fitting usually about $20-$25 3 feet of -6 line about $15-20 and 1 elbow to come off the fuel rail $12 and however you want to mount the FPR either a straight -6 or elbow straights are only about $5-$6. and then just use a hose clamp on the stock return fuel line..

one of the biggest problems is the stock FPR inlet is soooo small it just dont flow good enough.

another route is a bolt on AFPR roughly $130-$150 i think they are..

and depending on the amount of boost you wana run 650s are a good choice (ive had good luck with the 680s) but i just ran an evo 16g at about 18lbs daily driving.


and on another note... im not a big fan of the 18gs ive been in a couple cars with them and they really didnt impress me... id rather have an evo16g (one of the guys cars i was in sold his 18g and bought my evo 16g) and he likes that alot more.

 

[BaddAssGst]

I was trying to stay away from having to get a fuel pressure regulator, that's why I only wanted to go with a 190 rewired. As far as the turbo goes, I'm FWD and have been in one that had the evoIII and it just spooled to fast for what I want. I really wanted a 20g but I also can't afford a brand new one either.

 

[andymoraitis]

There's a number of people who have capitalized on the 18G without a 255 pump. If you ran it on a 190 with 650 injectors, like you mentioned, you'd be fine as long as other supporting mods were in place (FMIC, etc). Adding an FPR simply adds another link to the tuning sequence that may complicate matters if it's really not necessary, such as in this case. Hell if you had cams and 550's you'll still be OK at 17-18 psi with an FMIC. Take a look and see what you think:

http://www.roadraceengineering.com/marctech/2000_2.htm

Hope that helps.

Andy

 

[BaddAssGst]

Thanks alot... that does help. Although I am FWD, I don't expect to pull off any crazy numbers, just something I can cruise around in and not have many cars touch me. I'll end up going with a front mount but it will probably be just before summer before I get it done.

 

[4geze63]

here is apic of how i upgraded my fuel system

consists of
walbro 255
aeromototive fpr
edelbrock fuel filter
6-an feed/partial return
fic 650's


working vg sofar

 

[1990greenGSX]

Off topic question - how beneficial is a manifold? i'm still on the 1g (uncracked) but would it benefit me to go with the evo3 or slowboy manifold?

I think 4geze63 is a good person to ask since by the pic he is running the SBR manifold.. i could chime in, but it woudl probably seem biased!

Mark
SBR

 

[4geze63]

When your around the 300 crank hp range a upgraded manifold can easily add about 10-15 hp, I noticed the difference going from a stock 1g, to a ported slowboy.

Even unported the slowboy is larger then the evo3 for not much more $. spool increased by maybe 200-300rpm

 

[BaddAssGst]

Well I guess I'll have to add that to the list of things to do. Thanks guys.