max out a t-25!

[MaineDSM]

Originally posted by doug
Well, kinda. Looks like it's not the Denso Supra TT fuel pump that comes stock in a Supra, but a Walbro fuel pump designed to FIT into a Supra. Big difference. I don't even know why they're selling a Walbro 255HP for a Mk IV Supra TT-- doesn't the stock/OEM Supra pump flow more than 255 lph?

According to this page, yes: www.roadraceengineering.com/fuelpumpflowrates.htm

I'm getting a Supra Pump because it's quieter, and Denso is a good name. But you can't beat the price of the Walbros! There almost HALF the price.

 

[Rob]

im geting the walbro im going to dino mat most of the car anyways so i wont here the so called humming. n youre right on the price thats what grabs us guys trying to save a few bucks =)

 

[-=TWITCH=-]

Originally posted by -=TWITCH=-
when you guys say past 16 psi the t-25 is blowing hot air????? does that matter? will "hot air" hurt anything If I get a walbro 190 and log my runs what could I get out of the t-25 can I run the t-25 at 18 psi all the time with the fuel to feed it? my plans are to eventually go FPbigT28 but I would like to get all I can out of the T-25

 

[Rob]

Twitch i seen other people push 15 to 22lbs of boost and still make hp gains so its not just hot air just ask LarryD hes got the dino on hand.id recomend you get a fuel pump after 16lbs or you risk the dammage of lack of fuel to the motor and Bang or burning out the stock fuel pump.
just hold off on the boosting till you get suporting mods or the T28 with the mods Just my 0.02 cents
Later


Rob

 

[larryd]

Originally posted by boostineclipse
Larry..did you ever run at the track with the same setup that got you the results you posted above? If so, what did you get?

03-01-02
T25 (18psi), Injen Intake, Greddy Upper & Lower IC Piping, Greddy S Type BOV, Apexi N1 Exhaust, Apexi Front Pipe & Cat Bypass, Magnecor 8.5mm Wires, NGK Plugs, Greddy Profec B Boost Controller


60 330 1/8 mph 1000 1/4 mph
2.428 6.307 9.462 80.07 12.123 14.380 99.75

I never ran it higher then that at the track..

 

[jdmawd]

Originally posted by gotEclipseD
yea..i got 3' downpipe with piping done already...

3 foot down pipe

 

[HOOKSH]

i have a Greddy 16-row FMIC, stock T25, and stock downpipe goin into a thermal 3" catback; once i upgrade the fuel pump, can i get away with 22psi at the track just for a few passes? think that will hurt my engine or the turbo after a few passes? then go back to 16psi or so on the street?

 

[larryd]

22psi will hurt the turbo but it shouldnt blow it up. I ran 22psi alot on my T25 and it still had life in it when I sent it away to get the Big28.

 

[HOOKSH]

but what about my stock downpipe? is 22 gonna be a bad idea for now with my stock downpipe? should i wait a month or so until i get a 3" downpipe?

 

[igs]

Originally posted by larryd
as Ive said before.. I dynoed the T25 @ 15-20-23lbs and I made more power each time. I know everyone says its not efficient at over 15lbs but mine still made power. And this was on the stock SMIC..

<img src="http://www.newcelica.org/larryd/dyno/02-01-02-dyno_comparison.jpg">

This should be made a sticky because I'm sick of hearing people who don't have any actual experience keep saying the T25 only blows hot air after x psi.

 

[SoCaliEclipse]

Originally posted by Rob
im geting the walbro im going to dino mat most of the car anyways so i wont here the so called humming.

I have the 255lph and full DYNOMAT (sp ) and you can easily hear the humm of the pump. They can't put dynomat over where the pump is. Pull you back seats and check it out. There is a plate and the pump is under that. The dynomat works great in that it increases the SPL of your car, however I can easily hear mine through it. Everytime someone rides in my car for the first time, they are like, "What is that humming/whinning noise?"

But personally, I like the sound of the fuel pump, it just reminds me about the power under the hood!

In regards to running how much boost on the T25, I ran about 17 around town on the stock fuel system with no problems. I dynoed it at 19psi, but i didnt have a UICP, DP, LICP so I was down on power for that reason alone. I put down 198hp and 243lb-ft, so it did ok, considering what it had on it (intake, MBC at 19psi, magnecores, Greddy Evo, BOV and Additional UICP, THATS IT

Brian

 

[allwheelTSI]

Originally posted by doug
Well, kinda. Looks like it's not the Denso Supra TT fuel pump that comes stock in a Supra, but a Walbro fuel pump designed to FIT into a Supra. Big difference. I don't even know why they're selling a Walbro 255HP for a Mk IV Supra TT-- doesn't the stock/OEM Supra pump flow more than 255 lph?

no,and i'm not sure exactly what it flows,somewhere around 170-200 i think

 

[herostar]

HOOKSH- I wouldn't run past 16psi on a stock downpipe. Take your car to an exhaust shop and have them make you a 3" downpipe. I did, mine was 160 bucks including all flanges, stainless pipe, and a flex section.


A stock 3000gt fuel pump flows 180lph I believe, and it bolts right into a dsm with little to no problems. You can pick them up with low miles for about 50 bucks on 3si.org.

 

[focusedrage]

i was refered to this thread and it is very informative, all i have to say is what a REDICULUS amout of torque, i mean that is alot...

by theway how much torque does it require to break a awd dsm's tire loose? just wondering

 

[Kakoriat]

Originally posted by focusedrage
by theway how much torque does it require to break a awd dsm's tire loose? just wondering

A lot more then a T-2Small can ever produce.

 

[focusedrage]

this would be in the range of 400?500? i dont want to start anything...

 

[HOOKSH]

400? 500? what are you talkin about bro?

 

[focusedrage]

400 to 500 ftlbs

 

[sids]

just some clarification, when you guys say stock fuel pump, is this with or without the rewire mod? f my pump is rewired, who much HP is that good for?

 

[HOOKSH]

stock rewired pump isnt worth much, maybe 250whp? spend the 95$ to get a Walbro255 and be done just my $.02, my walbro was cheap and took less than an hour to install.

 

[focusedrage]

gonna need a regulator for that right? or is that just for the high pressure one?

 

[herostar]

regulator isnt' necessary, but recommended with the 255 regular pump. it's necessary with the high pressure pump.

 

[HOOKSH]

im runnin a 14b, walbro 255, not rewired, HIGH PRESSURE pump, and i dont have a regulator... i dont have any problems at all... what am i missin?

 

[Slow99x]

Originally posted by focusedrage
i was refered to this thread and it is very informative, all i have to say is what a REDICULUS amout of torque, i mean that is alot...

by theway how much torque does it require to break a awd dsm's tire loose? just wondering

My car has about 300+ hp and torque and I can break loose the rear tires on a hard take off @6000 rpms. My friends say that the front end of my car ALMOST comes off the ground.

 

[HOOKSH]

breakin the tires loose in an AWD is a bad thing you have AWD so you DONT do that, if you want wheelspin, get a wrong wheel drive, like i got, i can rip all of 1st, all of 2nd, and chirp 3rd, on 15psi on a 14b, and could do the same with 15psi on my T25, so if you like wheelspin, DONT get an awd