I got a 99 GSR with a Drag Turbo kit ..

 

Help Help..Ok heres the deal I just recently install a drag kit for my GSR but I didnt have any fuel set up such as inline fuel pump that usually comes with the drag kit..I took it for a past and try to gun it but it wont let me past like 4500 or 5000 rpm and it made a hissing noise when I gun it..it sounds like it aint getting enough fuel or from the fmu so I drove back took the plugs out it runnning hella lean so what does that mean is it because I dont have a inline fuel pump?..

So should I get the inline or intank..or the problem means something else?

 

Either.. Most H-Ters use intank pumps..

Walbro 255 HP comes to mind

 

Danm some people told me to run inline and my friend shop told me to run a intank..BUMP

 

BUMP::

 

if you are using the FMU use the inline pump

even a high pressure walbro can not provide the extreme fuel pressures that the FMU creates.

 

Yea im running a FMU so that close it run a inline fuel pump instead of the intank..

 

I would think the intank would be a better setup for high volume as opposed to high pressure but just my speculation really... cause I have always been curious what happens when the inline outflows the stock intank? Would not the stock intank pump become a restriction at some point?

Edit: I see your running an fmu... so... yeah. Not to be a nag but I would be careful not to get the pressures to extreme with that fmu setup... injectors and fuel components dont hold up well under those conditions.

 

Oh yeah, don't boost on your car until you get the *INLINE* fuel pump in place. You WILL blow the motor.

 

Yea everybody told me that..So you guys pefer inline fuel over intank if im running a FMU?

 

If there was some intank magical fuel pump that could handle the pressures necessary to run an FMU setup "successfully", then we'd recommend that. But since there is no such pump, you need an inline pump.

Here is what a walbro so-called "high pressure intank pump" flows at pressure:



And that is exactly why you don't want to run one with an FMU. Get an inline pump like this one:

http://www.importparts.com/sho...6ae3d

 

I never understood that. How is an inline pump going to be any better at flowing more fuel at higher pressure?

 

The airtex etc pumps that I always recommend flow 30+gph at 125psi. From the graph you can see that a walbro 255 flows approximately 0 gph at 125psi.

 

Hmm interesting..

 

40psi base pressure, with 12:1 FMU at 8psi of boost you are going to be "trying" to run 40+12*8 = 136psi.

 

so inline is the way to go?

 

INDEED

 

Thanks Dustin for the help..

 

sent you a PM ....good luck on the set up

 

THNX first time going turbo..

 

i would also look into some fuel management other than the fmu. there is no telling how long the motor will last on the fmu alone. just a little insight to get you goin on you turbo setup

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turboaddict &raquo;</TD></TR><TR><TD CLASS="quote">i would also look into some fuel management other than the fmu. there is no telling how long the motor will last on the fmu alone. just a little insight to get you goin on you turbo setup</TD></TR></TABLE>

It will last a lot longer with an inline fuel pump installed hehe

without inline fuel pump... you could try maybe 4-5 full boost runs until I say you ring lands are gone. Just ask jake

 

Just doing the basic for now maybe in the future prolly go with a stand alone..

 

if you are running the FMU you WILL need the extra volume only the external can provide. just a walbro 255 alone with an FMU is a little on the borderline.

 

So what your trying to say Boostedcivicsir?