Tell me why I shouldnt get the 255lph...

[jayntguru]

Originally posted by MaineDSM


Thats because the 2G fuel return line is too small. You

Wrong, try again.

 

[irn__man]

Originally posted by jayntguru


Wrong, try again.

What a waste of a Post!

 

[nine5raptor]

Originally posted by doug
Maybe, I don't know. I'm not going to take anybody's word as gospel-- I'll try out different setups for myself and see what works. I am, however, curious to see how well a rewired stocker with the -6AN fuel line from filter to rail works. I've got the fuel line in, but just need to rewire the pump now.

I have the -6an line from a russel filter to the rail with the www.autoalchemy.com fitting. I can run 18 psi (14b on a 2g) on the stock, rewired pump, stock 450s and maft (blowthrough) w/o running out of fuel (verified with pocketlogger). At 19, I hit fuel cut, so I need injectors. I plan on getting some 650's and seeing how they do with the rest of the fuel setup how it is now. I also run the stock sidemount with the bumper ported all to hell and it is 101 F here today and no probs. with knock (amoco 92 octane).

 

[jayntguru]

Originally posted by irn__man


What a waste of a Post!

Hey kettle! Your post was not a waste?

Mine was on topic, and based off experience, not useless internet jabber. It was also intentionally posted in the same manner as the original poster. Your post wasn't even on topic.

If you want details, hit the link in my sig. I've done a few of these installs and never had an issue getting fuel pressure down once some of the obvious issues were taken care of.

Hmm, sig isn't showing up, not sure why. Hit the link in the profile over there on the left.

 

[irn__man]

Originally posted by jayntguru
If you want details, hit the link in my sig. I've done a few of these installs and never had an issue getting fuel pressure down once some of the obvious issues were taken care of.

Hmm, sig isn't showing up, not sure why. Hit the link in the profile over there on the left.

Know we get a little info.........

So, on your website on your fuel system upgrade did you leave the stock fuel return line as is with out any issues?

I did a quick test today with my CAS FPR, 255 Hi-Pressure Fuel Pump, Rewire Mod, and 1G Fuel Rail. I ran a return line in a gas can and my fuel pressure dropped like a rock. So, it looks like it may be possible that the 2G stock fuel return line is restrictive to some degree.

iron

 

[jayntguru]

Yes. On my car and the others I have done they are running the stock 2G return line. It flows just fine.

Make sure there are no kinks in the line going from the FPR into the stock hardline, this is where most problems arise.

 

[MaineDSM]

Originally posted by jayntguru
Yes. On my car and the others I have done they are running the stock 2G return line. It flows just fine.

Make sure there are no kinks in the line going from the FPR into the stock hardline, this is where most problems arise.

I'm sorry, this may be true on your car and the others you have done, but my experience is that is not true with a decent rewired pump.

My experience: Walbro 255 rewired and a Supra rewired. The Walbro is in a '99 GSX, the Supra in a '96 Talon AWD.

There were no "kinked lines". The stock fuel return hard line could simply not flow enough fuel to keep the fuel pressure down to stock. The line was replaced, and the problem was solved. There were no other variables.

With the pump rewire removed, the stock return line was barely able to keep up.

Please don't make it sound like I'm talking out of my ass here. I've actually done the work. The fact that Buschur told me they had experienced the same thing was just icing on the cake.

Maybe your experience is not with a rewired big pump? Another thing I found is that sometimes you can get the 0psi (hose off the manifold) pressure to be 43psi, but when you hook the hose back up from the manifold to the AFPR (so it sees vacuum) the fuel pressure will not go down like it is supposed too. In this case, if you only checked the fuel pressure with the hose off, it would look fine, when in fact, you are actually overrunning the fuel return line.

Share and enjoy.

 

[MaineDSM]

Originally posted by irn__man


I did a quick test today with my CAS FPR, 255 Hi-Pressure Fuel Pump, Rewire Mod, and 1G Fuel Rail. I ran a return line in a gas can and my fuel pressure dropped like a rock. So, it looks like it may be possible that the 2G stock fuel return line is restrictive to some degree.

iron

It is. I had the exact same experience, as stated above.


So JayNTGuru may just have not worked on a pump replacement with a rewire. Either that, or he is talking out of his ass.

 

[jayntguru]

I am speaking from first hand experience with multiple cars. If you read my page it says this.

(There is a decent kink in the factory hardline that you must straighten out.)

No idea why my sig isn't showing up, it is checked and complete.

 

[irn__man]

Well before I go replacing the stock return line with something like a -6an. I am gonna try the 255lph fuel pump that is not the hi-pressure model. For know it would be the easiest thing to do.

 

[MaineDSM]

Originally posted by jayntguru
I am speaking from first hand experience with multiple cars. If you read my page it says this.

(There is a decent kink in the factory hardline that you must straighten out.)

That makes sense, you didn't mention that before. Where is the kink in the factory hard line, and how did you get it out? That might be a more elegant solution than running a whole new line.

 

[jayntguru]

Here's a pic I took.

http://home.nx2k.com/thumbs/fpr/fprlines.jpg

The burgendy line is where you have to straighten it out. Make sure the rubber line uses a nice big arc so it doesn't kink either.

 

[VBGSX]

Bigger is not always better! Plain and simple.
190 lph pump is perfect for the job you need done.
It won't over run AFPR(stock AFPR works fine)
It idles like stock
It's not winey
If you are still not sure, I would suggest......buy the 190 lph high pressure pump(not as well known as the regular 190).
This is the pump I have. It also has the same qualities as the regular 190 with no cost difference. This pump easily ran a 20g equipped car with 660's.
I've seen this pump on many sites, but I bought mine through Slowboy.
Good luck

 

[jdmawd]

3 pages of blah blah blah awdboost and l2rtsi gave the best operational review and specific answers to the posted question.

1) if you get a 255 pump you will need a AFPR period

2) the 255 pump is not loud or whinny

3) if you are not going to accept factual answers that are based on experience with the parts in question simply STFU


this thread should have ended 2 pages ago

 

[doug]

I felt that this whole thread was an enjoyable read-- often casual discussion, even with some tangential rambling, is just as good as a short concise answer. If that's not your thing, then maybe YOU should just STFU.

 

[jdmawd]

Originally posted by doug
I felt that this whole thread was an enjoyable read-- often casual discussion, even with some tangential rambling, is just as good as a short concise answer. If that's not your thing, then maybe YOU should just STFU.

tangibly ramble yourself into a clue

Originally posted by doug

Yeah, and the main bottleneck is the banjo bolt on top of the stock fuel filter and the filter itself. Get rid of those and you can run the stock pump easily.

:laugh:

 

[doug]

You're right-- I should've said REWIRED stock pump. You got me; you must feel so proud.

 

[MaineDSM]

Originally posted by doug
You're right-- I should've said REWIRED stock pump. You got me; you must feel so proud.

You can use the rewired stock pump for what? (I might have just missed this in the orginal post)

Some people run mid 12s on the stock pump and race gas. I don't think you could make any more power than that without a bigger pump, no matter how nice the feed lines are. I'm willing to hear evidence to the contrary, however.

I personally ran out of fuel with my stock rewired 2G pump in the low 13s. I never tried replacing the filter and feed line though. Just jumped straight to a Supra pump and big injectors.

(PS. Can we all just stop the E-Thuggery? I have learned stuff from this thread, though. If E-Thuggery is what it takes to learn, than by all means, Thug away!)

 

[doug]

Originally posted by MaineDSM
You can use the rewired stock pump for what? (I might have just missed this in the orginal post)

I was only trying to say that when removing the major restrictions in the stock fuel system (banjo bolt and stock filter), that the stock (rewired) pump should be fine. I didn't, unfortunately, state any restricting paramaters with it, such as "it'll be good up to xxx HP" or "good enough for 12s" or whatever. Talking with several guys who have redone their fuel lines, and having done so myself (at least partially so far), has led me to the opinion that doing so is a good idea and helps a lot. But just throwing a big pump into the stock setup is another option as well, and works for many, and I didn't mean to imply otherwise.

I don't know at what point my setup will still require a bigger pump-- the SteveTek site (which some disagree with, I realize) says around 400 HP, I think. I'll have to check it again.

Sorry for getting 'tude.

 

[irn__man]

Update:

Removed my 255lph Hi-Psi Fuel Pump and replaced with 255lph Lo-Psi fuel pump. Removed the 10ga. wire mod and now the fuel pressures are fine with vacuum connection installed or removed. Also, when I first tried the 255lph Lo-PSI with 10 ga. wire mod the pressure was elevated and I still could not turn the fpr down enough to compensate.

iron

 

[MaineDSM]

Originally posted by irn__man
Update:

Removed my 255lph Hi-Psi Fuel Pump and replaced with 255lph Lo-Psi fuel pump. Removed the 10ga. wire mod and now the fuel pressures are fine with vacuum connection installed or removed. Also, when I first tried the 255lph Lo-PSI with 10 ga. wire mod the pressure was elevated and I still could not turn the fpr down enough to compensate.

iron

The same thing happened to me, except with a Supra pump. I think we have determined, beyond any doubt, that the extra voltage a fuel pump rewire gives really sends a lot more fuel down the lines!

 

[badboyr66]

hmmm , intresting cause i just did work to my freinds car

walbro 255 hp
AFC2
550cc injectors
no rewire ect "yes u hear the wine increse"

The car has been a nightmare to tune, it has been so incosistant it isnot funny. I think I might throw in the stock pump and give it a shot. I am thinking the Supra TT pump is starting to sound real good for me though. Where could I get one?

 

[doug]

http://www.partznet.com/mitsubishi/mitsudsmclub.html

 

[Talonman]

Originally posted by CL MaNTis GST
ok, i've decided to go with the regular 255lph, not the HP.
found it for $98.

sound good?

Just take everyones good advice and go 190lph and dont mess with your fpr for alot less$ Here's one for $98 after shipping, it came very quickly like 4 days CLICK HERE FOR 190 LPH Sure its $5 more than the 255 you found but $5 more for no fpr worries and enough fuel for a 50 trim and 11 sec slips seems likes a no brainer. Whats funny is Honda guys dropping 255's in base model Civics:laugh:

 

[Nerfherder]

Originally posted by Talonman
Just take everyones good advice and go 190lph and dont mess with your fpr for alot less$ Here's one for $98 after shipping, it came very quickly like 4 days CLICK HERE FOR 190 LPH Sure its $5 more than the 255 you found but $5 more for no fpr worries and enough fuel for a 50 trim and 11 sec slips seems likes a no brainer. Whats funny is Honda guys dropping 255's in base model Civics:laugh:

You forgot to look at the dates. Irn was doing this in July of last year. He went with the Lo-PSI 255.