I currently have a 84.5mm darton sleeved gsr with wiseco 8.8.1 compression pistons, eagle rods, stock gsr crank all balance. The Head is all built valves, dual springs titanium retainers, hoping to get up in the 550hp range I have a turbo that should push that. I will be running 750cc injectors if have to will go bigger it will be uberdata tuned at first but if have to will get something else. Right now I have a walbro 255lph in tank pump and will be upgrading the fuel line to the tank for filter and rail is that a must do if so what size hose 10an or 8an hose. If I have to upgrade fuel pump whats recomended and any pics of how its hooked up I wanna still keep my factory tank is that a issue.. Please Help Have to have car right for the first tune.....

 

them 750's will be very close if not overmaxed out in the 550hp range, as usual someone will post that they have done it before but who wants to run around with their injectors @ 100% duty cycle, you are also totally maxing out the walbro 255 @ that horsepower. 10an hose is not needed but the 8 is perfect for your setup. I would upgrade to an Aeromotive A1000 pump with the 8 lines and 1000cc injectors and FJO driver box to keep the fuel system conservative. The Aeromotive should be run under the car and a pickup installed into the tank to eliminate the in-tank walbro. If you really wanna be a cool guy, sump the tank and run the Aeromotive pump with an in-line filter and the lines and you are set....good luck

On another note I have a new set of 750's FS if u are looking for a set.

 

yay...sump the tank.

 

yeah I kinda thought so too.. doesn't uberdata only tune up to 880cc injectors

 

BUMP

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96 GSR-T &raquo;</TD></TR><TR><TD CLASS="quote">them 750's will be very close if not overmaxed out in the 550hp range, as usual someone will post that they have done it before but who wants to run around with their injectors @ 100% duty cycle, you are also totally maxing out the walbro 255 @ that horsepower. 10an hose is not needed but the 8 is perfect for your setup. I would upgrade to an Aeromotive A1000 pump with the 8 lines and 1000cc injectors and FJO driver box to keep the fuel system conservative. The Aeromotive should be run under the car and a pickup installed into the tank to eliminate the in-tank walbro. If you really wanna be a cool guy, sump the tank and run the Aeromotive pump with an in-line filter and the lines and you are set....good luck

On another note I have a new set of 750's FS if u are looking for a set.</TD></TR></TABLE>


theres some incorrect info in that post.....

first....youll be fine with the 255 HP pump and stock lines at 550 hp....

second.....the stock feed line is fine just run a -6 or -8 off the top of the filter to the rail.

3rd....you cannot run a pickup in the tank where the stock pump goes to a aeromotivc a1000 that pump is gravity fed and will not suck up gas...

run the 255hp stock lines and some RC 1000 cc injectors with a resistor box and your good to go .....you can even run the stock regulator

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96 GSR-T &raquo;</TD></TR><TR><TD CLASS="quote">them 750's will be very close if not overmaxed out in the 550hp range, as usual someone will post that they have done it before but who wants to run around with their injectors @ 100% duty cycle, you are also totally maxing out the walbro 255 @ that horsepower. 10an hose is not needed but the 8 is perfect for your setup. I would upgrade to an Aeromotive A1000 pump with the 8 lines and 1000cc injectors and FJO driver box to keep the fuel system conservative. The Aeromotive should be run under the car and a pickup installed into the tank to eliminate the in-tank walbro. If you really wanna be a cool guy, sump the tank and run the Aeromotive pump with an in-line filter and the lines and you are set....good luck.</TD></TR></TABLE>

What is the point of running the HP pump if you are not going to run an aftermarket regulator to turn the pressure up? I know 2 people that ran out of fuel in the walbro at just a tick over 500hp. As I stated in my post, someone will post that they have done it before. Yes the stock lines are fine but they way that I posted it leaves room for more horsepower as we all know most people go after, so why not do it right in the first place? I added the injecotr driver in there because "some" people have problems with fluctuating AFR's at idle with the bigger injectors and/or running rich. In my personal experiences I have had to do everything twice and or sell parts that I just bought to buy new ones a couple months later to get more HP so I was just trying to direct the guy to do it right in the first place.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96 GSR-T &raquo;</TD></TR><TR><TD CLASS="quote">

What is the point of running the HP pump if you are not going to run an aftermarket regulator to turn the pressure up? I know 2 people that ran out of fuel in the walbro at just a tick over 500hp. As I stated in my post, someone will post that they have done it before. Yes the stock lines are fine but they way that I posted it leaves room for more horsepower as we all know most people go after, so why not do it right in the first place? I added the injecotr driver in there because "some" people have problems with fluctuating AFR's at idle with the bigger injectors and/or running rich. In my personal experiences I have had to do everything twice and or sell parts that I just bought to buy new ones a couple months later to get more HP so I was just trying to direct the guy to do it right in the first place. </TD></TR></TABLE>

not being a dick but
if your going to give someone advice.. give them advice from experience not from what you have read.

ive made 660 hp on a 255 intank and up to 1000cc injectors are fine with no driver.
i know this because i tried it...

and you dont turn up fuel pressure on a 255 hp to get more volume...you turn it down. your giving bad advice

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D@nnY &raquo;</TD></TR><TR><TD CLASS="quote">
ive made 660 hp on a 255 intank and up to 1000cc injectors are fine with no driver.
i know this because i tried it...</TD></TR></TABLE>

I came close to maxing out 1000cc's at around 560whp (88-90% duty cycle). I can not remember the static fuel pressure though... I think it was around the 43psi range. What fuel pressure were you running? Oh yea, a walbro 255 was also used flawlessly on this set-up.

For 550whp I would definetely go with a 1000cc injector. I maxed out the last set of 750cc's at 470whp on a b20. I believe the fuel pressure was 43 as well. You always want too much injector rather than too little.

 

I was not trying to be a dick either.... I specifically said some people will say they have done it, some have not. For whatever reason some people have better experiences with certain parts than others...... you are defiately the maSta because your car is the exception, i do not know what else to say.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">

I came close to maxing out 1000cc's at around 560whp (88-90% duty cycle). I can not remember the static fuel pressure though... I think it was around the 43psi range. What fuel pressure were you running? Oh yea, a walbro 255 was also used flawlessly on this set-up.

For 550whp I would definetely go with a 1000cc injector. I maxed out the last set of 750cc's at 470whp on a b20. I believe the fuel pressure was 43 as well. You always want too much injector rather than too little.

</TD></TR></TABLE>

at 654 hp the RC 1000s were at 102 percent according to the hondata base fuel pressure was like 45-50 with a stock regulator

im on 1600 precision now and its making more power...at 663 hp the walboro couldnt keep up anymore even with the 1600s

I REALLY liked the RC 1000 cc's the precision 1600s are kind of a pain in the ***

 

Doesn't uberdata only able to tune up to 880cc injectors wouldnt 1000cc injectors be to much for uberdata?....let me know hoping to get somewhere also I will be looking to running more power but couldn't i get away with tunning for as max as I can go on uberdata then over the winter do the fuel system.....JOSH


Modified by JLHDOHC at 4:36 PM 4/10/2006

 

anyone?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JLHDOHC &raquo;</TD></TR><TR><TD CLASS="quote">Doesn't uberdata only able to tune up to 880cc injectors wouldnt 1000cc injectors be to much for uberdata?....
</TD></TR></TABLE>

you will probably be able to get it to run on UD but not very well.......you would need a good injector driver to properly control a injector that large at idle/part throttle. and even then its just a pain in the *** to get it to work right.

but i reccomend you use a good EMS for large injectors like that.......the uberdata support has gone to ****.

 

my walbro didnt want to make any more than 550. my car liked to run real rich though? it would make more power with a 11.0 af than 11.80 or so. it also wasnt a HP pump, just a normal junx

 

I am glad that you posted that, it is amazing the levels of varying results with the same products such as fuel injectors and pumps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC &raquo;</TD></TR><TR><TD CLASS="quote">

you will probably be able to get it to run on UD but not very well.......you would need a good injector driver to properly control a injector that large at idle/part throttle. and even then its just a pain in the *** to get it to work right.

but i reccomend you use a good EMS for large injectors like that.......the uberdata support has gone to ****.</TD></TR></TABLE>

thats not true...you dont need a driver box for RC 1000s and you really dont need it for 880s ....

ive owned preciison 880s rc 1000s and precision 1600s

the only injectors that needed the FJO driver were the 1600s.....and it idled fine without them the only proBlem was partial throttle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbo-charged &raquo;</TD></TR><TR><TD CLASS="quote">my walbro didnt want to make any more than 550. my car liked to run real rich though? it would make more power with a 11.0 af than 11.80 or so. it also wasnt a HP pump, just a normal junx</TD></TR></TABLE>

what size injectos? it seems to really help to chang ethe line off the top of the fuel filter to a -8 or -6 and get rid of that stock line with the banjo fitting...they are restrictive

 

1000cc injectors. i was actually was running a -6 from the factory feed line into a SX filter, with a -8 from the filter to the rail.

i was running my injectors paired.....im wondering if that had any effect on anything, my injectors were in the 90% range with just a little over 600whp on a 35r.

my set up was pretty far from ideal. it was all done last min. with junk used parts real late at night.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D@nnY &raquo;</TD></TR><TR><TD CLASS="quote">

what size injectos? it seems to really help to chang ethe line off the top of the fuel filter to a -8 or -6 and get rid of that stock line with the banjo fitting...they are restrictive</TD></TR></TABLE>

I have an direct replacement 6an braided line with an fittings and the banjo fitting......the inside diameter looks bigger than the stocker but I have not installed it yet. what type of regulator are you running and where is it mounted?...I am thinking about chucking the firewall mounted fuel filter and mounting one down near the tank to help me mount my AEM universal reg. do you have a pic of your engine comp?

 

whats the recomended fuel pressure regulator to run if I am running the Aeromotive A1000 pump I kinda would like to stick to the aeromotive fuel pressure regulator but which one..