do you get any gains with the 255 fuel pump?

[GstRacer]

if you rewire the fuel pump and get a 255 will you get any power out of it?? also can i just rewire it and put the fuel pump in and everything will be the same or am i going to have to have a fuel pressure reg. thanks

 

[Gooberlog]

i've heard of some people lowering the knock count some with a larger fuel pump, which would probobaly result in your timing being advanced slightly which might give you a hp or two, but don't quote me on this, just what i've heard.

 

[Sephroth57]

im not sure if the pump itself will give you gains. but the point is to supply more fuel to let you run higher boost, so technicly it is giving you gains by enhancing your turbo

 

[Boosted98gsx]

It's allowing you to get gains. It's a support beam for larger turbos and more airflow.

 

[DSMJim]

Since you have a 16G then yeah it will probablly help you out cause you need more fuel for the extra air you already have.

If you were on a stock turbo it would likely make you slower cause your going to run richer on a T25, which would make it slower.

 

[JapspeedUK]

Hi Guy's

Well have just fitted mine yesterday (Walbro 255) did not rewire it just unplugged the old and plugged in the new then reset the ECU.
Went out last night and got a surprise!! we had 160mph!!! this was very easy and quick to get there, unlike before, it was quick to 120 then real slow to around 135mph max. PLUS I'm still running my stock T25 for now at 16psi on 98 Oct (I'm from the UK hence the 98 Oct)
I've heard the T25 can not hold high boost or handle more than 250bhp???? BUT mine is holding boost at high boost and the car is 278bhp (Before the Walbro was fitted)
On a down side though, since fitting pump it's a bi*** to start (5 seconds on the key!!) hot or cold and it's noisy!!

Take care

Shane

 

[LandoAWD]

Your fuel pump did nothing to raise your top speed.

 

[al5dsm]

Originally posted by LandoAWD
Your fuel pump did nothing to raise your top speed.

^^^^^^^^ what he said

 

[kpt4321]

I bet it was the wing. That thing is "illin'." Or maybe the graphics.

 

[JapspeedUK]

So where did the extra power come from?? All mods on the car were done before the fitting of the fuel pump, however I brought the car totally standard 3 months ago and have done all the mods without resetting the ECU until a mate said I should reset it. the mods being Complete catback Greddy stainless, Bomz stainless hi flow cat, Cosmo cone filter, IRIDIUM IW22 plugs, restrictor removed from boost solinoid, 50 shot of NOS (but speeds above are without NOS) Greddy boost controller PRofec-B spec (but still not wired in yet!)
With these mods it was noticably faster 0-60 and still pulling upto around 110-120mph then it was real slow reaching 135mph, fitted the Walbro 255 pump, reset ECU (disconnected battery for 10 mins) then went out and got the 160mph WITH EASE! and nearly 1.000 revs to go before redline, so I guessed it was down to the fuel pump??
Don't know if it makes a difference? but I imported the car from Japan and it has Japanese writing under the bonnet but it's still left hand drive which makes me think it was still built in the USA. have attached photo of my Engine in case it's different from others but I don't think it is, it has stamped on it 4G63 and chassis begins with D32A.......

 

[dsmturboawd]

Originally posted by JapspeedUK
So where did the extra power come from?? All mods on the car were done before the fitting of the fuel pump, however I brought the car totally standard 3 months ago and have done all the mods without resetting the ECU until a mate said I should reset it. the mods being Complete catback Greddy stainless, Bomz stainless hi flow cat, Cosmo cone filter, IRIDIUM IW22 plugs, restrictor removed from boost solinoid, 50 shot of NOS (but speeds above are without NOS) Greddy boost controller PRofec-B spec (but still not wired in yet!)
With these mods it was noticably faster 0-60 and still pulling upto around 110-120mph then it was real slow reaching 135mph, fitted the Walbro 255 pump, reset ECU (disconnected battery for 10 mins) then went out and got the 160mph WITH EASE! and nearly 1.000 revs to go before redline, so I guessed it was down to the fuel pump??
Don't know if it makes a difference? but I imported the car from Japan and it has Japanese writing under the bonnet but it's still left hand drive which makes me think it was still built in the USA. have attached photo of my Engine in case it's different from others but I don't think it is, it has stamped on it 4G63 and chassis begins with D32A.......

you gained like 15-20hp with those mods and you spent a hella amount of money to do it. for that kind of money, you could be running 12's.

ok, time for the diatribe on drag coefficients and horsepower and why your near stock car will never reach much more than 150mph. so, as your car is cutting through the air at an increasing amount of miles per hour, the force of friction increases, as your car has to displace more air per unit time. This obviously requires more energy (watts or horsepower) to maintain or increase speed. so with a stock 5th gear, your near stock 2g can go 168.47 miles per hour at 7300RPM. this will only happen in a vacuum. 225 crank horsepower, which is more like 155-165awhp is not even close to enough to overcome the huge amount of drag created by the vehicle at speeds over ~130-140mph. (1g guys, you have it even worse as your drag coefficient is significantly higher than the 2g's (also probably why buschur's 7sec car is a 2g)) additionally, downforce also contributes to drag at all speeds, though more pronouncedly at higher speeds since it effectively redirects a percentage of your straight line energy downwards. simple vector math and calculations of how many pounds/kilos of downforce your car makes at X mph could allow you to calculate this added drain on power. i know i haven't explained this very well, but basically once you reach the point where the force of friction is greater than or equal to the force propelling you, you aren't going to go any faster.

i think that's enough for now. hope I didn't screw up my explanation anywhere..


btw, you listing sparkplugs as a mod is a silly as your taillights, rice spoiler, and ridiculous amount of stickers. also, you'd lose the bov and get a cbv if you respected your car.

 

[JapspeedUK]

Ummm, I think we maybe going off the original question a little here, " Do you get any gains with 255 fuel pump?" I say "Yes" Now dsmturboawd comes along the his tech head on along with disrepecting other peoples rides and doubting what I've said!!!

I think your car looks plain and boring dsmturboawd, but thats my opinion which I'd normally keep to myself but as you choose to diss mine???

1. Remember I'm in the UK the styling fashion is different here than it is there in the USA

2. I gained 15-20hp?? Don't think so mate!! correct me if I'm wrong the Eclipse GS-T is approx 215bhp standard? well I'm a proven 278bhp (see photo below) now do your maths... 15-20 WHATEVER!!!

3. I am more than happy to go out tonight and photograph the speedo reading of 160mph, I know the clocks are not true at this speed but thats what I saw.

4. Why is it silly to list the iridium plugs?? it's a mod which gave me an increase on output

So don't tell me what my car is outputing fool!! the question was " Do you get a gain from the 255" and yes as far as I'm concerned I did period!

Back to the original question!! how come my power increased once the 255 pump was fitted??

Regards

Shane

 

[dsmturboawd]

Originally posted by JapspeedUK
I gained 15-20hp?? Don't think so mate!! correct me if I'm wrong the Eclipse GS-T is approx 215bhp standard? well I'm a proven 278bhp (see photo below) now do your maths... 15-20 WHATEVER!!!

210, not 215. notice that at 6250rpm, youre at about 220hp. like i said, 15-20hp and i guess i was being too generous. arent you lucky its 210 stock, not 215. then it'd be only 5hp for over 1000 bucks in performance mods.

Originally posted by JapspeedUK
So don't tell me what my car is outputing fool!! the question was " Do you get a gain from the 255" and yes as far as I'm concerned I did period!

Back to the original question!! how come my power increased once the 255 pump was fitted??

youre not showing me a before and after dyno printout, so maybe this "gain" was in your head. we all tend to feel gains that arent there when we want to. only reason i could possibly think you gained powa from a 255 is because you werent knocking so damn hard with a 50shot on a stock fuel system.

 

[JapspeedUK]

What the F*** as NOS got to do with it?? I was not using it before or after.
To be real honest I was answering a fellow Eclipse/Talon owners question, then you pipe up with all this bullshit! I don't think people really wanna read this from a so called know it all, your just looking to piss people (me) off, it's worked GREAT! now F#*K OFF!!
AS YOU SEEM TO BE ALL THAT!! just how long you owned your ride? I've had mine three months and am pretty happy with how it is now from stock and I've not even started yet!! who's counting the dollars cos I'm not............

 

[dsmturboawd]

Originally posted by JapspeedUK
What the F*** as NOS got to do with it?? I was not using it before or after.

so in your dyno slip that extra 50hp outta nowhere was caused by your mods with the t25 and no nitrous? now youre confusing me.

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[LandoAWD]

Please explain to me, how a pump on a stock system with a stock turbo setup increased your top speed. Top speed is limited by gearing and aerodynamics. Alaso explain to me how on a turbo that drops off in power after 5500 RPM, you managed a HUGE jump in HP on your "dyno". Was it the iridium plugs? As for the all out flaming, lets keep this adult, folks.

 

[JapspeedUK]

Jes! I feel I'm banging my head against the wall, do people not read the posts before replying??
LandoAWD How can I explain to you?? I'm asking people to explain to me why I have more top speed!!! although all I've had so far is some goon (dsmturboawd) getting on his high horse telling me the laws of physics and that I'm going crazy and my car is crap!! people like this need to LEAVE this site or keep there opinions to themselves, anybody would think he drives the best Eclipse/Talon on the planet.

Oh and..Don't give any technical advice unless you have first-hand experience on the subject... dsmturboawd

I also have a modded 1993 3rd Gen RX-7 to which I use an RX7 messageboard, I must say I have never had problems there, their messageboard is there to help each other NOT slate and disrespect each others ride


LANDOAWD IF you look at my dyno sheet? there is no drop off at 5500rpm mine is dropping off at 6400rpm but yes I do have Iridium plugs IW22's

And to think I was only originally trying to help GSTRacer with a question he had, if I'd known it would cause so much grief I'd not have bothered.

I STILL SAY FITTING THE 255 GAVE ME AN INCREASE IN PERFORMANCE.. lets just leave it at that!!

As I said before I'm more than happy to go out and photograph my speedo reading 160mph if I have to prove myself...........

 

[dsmturboawd]

Originally posted by JapspeedUK
I've had so far is some goon (dsmturboawd) getting on his high horse telling me the laws of physics and that I'm going crazy and my car is crap!! people like this need to LEAVE this site or keep there opinions to themselves, anybody would think he drives the best Eclipse/Talon on the planet.

Oh and..Don't give any technical advice unless you have first-hand experience on the subject... dsmturboawd

yeah, lets kick the tech people off this site, that'd be smart. then we'd have people like you telling others that a fuel pump ups your top speed.

you still have yet to explain your dyno sheet. you deny spraying on it, yet it clearly shows that you did. theres no way that you got ~280hp out of a t25 without spraying, escpecially with your mods, we've already gone over the amount of hp you really gained from those however.

since when did you have to have first hand experience to give a correct technical answer. ive already proved you cannot hit that speed. now go take a pic of your cluster and open photoshop.

 

[JapspeedUK]

Your a f***ing grade a WAN*ER!! MATE tell you what, reply to yourself I'm not even going to waste my time anymore.
Maybe you don't like what you see but I've no reason to lie **** I don't have to prove myself to no one!!
You've seen the proof and are already trying to find an excuse to diss my speedo photo, so I'll not even bother GO #### YOURSELF dsmturboawd your a fricking retard!! with a car that looks so boring I'd fall asleep if I was behind it...........

 

[JapspeedUK]

One last thing RETARD boy, Don't know about you but UK Rolling road tuning companies are not insured for usage of NOS while on the rolling road so NO i did not have NOS on..........
ANYBODY that can get UK CableTV (sky digital) check out Granada men and motor "Dyno bobs shoot out" on the 20th Dec 2003 (Saturday) TO SEE THE ACTUAL RUN THE ABOVE SHEET CAME FROM AGAINST A NISSAN 200SX TURBO

 

[AW4G63]

Owned


Euroguy, he has you. Im not attacking you, im not poking fun. But a fuel pump has nothing to do with your top speed. Not matter what pump you had you would one day get to that speed.

Are your tires Z rated?


Go take a pic from a few angles with a penny on the dash.



IBheaskswhatapennyis

 

[AW4G63]

Originally posted by JapspeedUK
One last thing RETARD boy, Don't know about you but UK Rolling road tuning companies are not insured for usage of NOS while on the rolling road so NO i did not have NOS on..........
ANYBODY that can get UK CableTV (sky digital) check out Granada men and motor "Dyno bobs shoot out" on the 20th Dec 2003 (Saturday) TO SEE THE ACTUAL RUN THE ABOVE SHEET CAME FROM AGAINST A NISSAN 200SX TURBO

Im in the back ground holding a

John 3:16 sign

 

[LandoAWD]

Originally posted by JapspeedUK
One last thing RETARD boy, Don't know about you but UK Rolling road tuning companies are not insured for usage of NOS while on the rolling road so NO i did not have NOS on..........
ANYBODY that can get UK CableTV (sky digital) check out Granada men and motor "Dyno bobs shoot out" on the 20th Dec 2003 (Saturday) TO SEE THE ACTUAL RUN THE ABOVE SHEET CAME FROM AGAINST A NISSAN 200SX TURBO

I asked you to keep this adult in fashion, but apparently a warning wasn't enough. It was directed at the two of you, and his response was nowhere near as juvenile as the crap you just spewed forth. My point was that a T25 looses efficiency, yet in your run, you managed another 50+ HP. There is something you are leaving out, or we are not understanding. A change in fuel pressure will not increase the top speed. Your comments were a blatant disregard for my simple request.... Locked.