Godspeed is a brand many stay away from here. Many members as well as I run a stage 2 setp on stock fuel pump with no problems.

 

he said GOODspeed, not GODspeed. lol

i've never heard of anyone requiring an aftermarket fuel pump for stage II. my tuner protuned mine on the OEM one.

 

I would think with an upgraded pump you could squeeze out a little more power/run a little more boost..but I don't see why it would be mandatory..

 

Go to a different shop, you really don't need a different pump at stage 2. If you must, why not Walbro?

 

Replacing the pump isn't a bad idea, most can get away without it, but it will give you more overhead in case something goes wrong (you always want to make sure you have plenty of fuel). The Walbro 255lph is cheap enough I don't see any reason not to.

 

I have a modification path you don't want to follow, but I found out the hard way in a sad attempt at a stage 2 tune, and WOT in 3rd at 6500rpms on the stock gear ratio is enough to make the ECU freak out. I assume that is what happened, there was a severe fuel cut and the car stuttered, stalled, restarted due to already-present fuel, and was OK again. Upon asking my mechanic what that was being caused by, he reminded me about our previous conversations about injectors/pump/tune and that all 3 should be done at once, that 550cc injectors are just over the ability of the stock pump once an tuning is up for the doing. You CAN do it, but for headroom as stated, and safety as stated, basically the same thing stated two different ways, it isn't a foolish 45 minutes and under $200 investment in the durability of the fueling system. This is one of those "don't cheap out" things, since it isn't something you can just whip back together on the side of the road without tools. My opinion, your car. Anything that breathes better is going to need to drink more. Especially if you put more fire under it's butt.

 

I have a modification path you don't want to follow, but I found out the hard way in a sad attempt at a stage 2 tune, and WOT in 3rd at 6500rpms on the stock gear ratio is enough to make the ECU freak out.

No, the stock ECU is more than capable of handling far beyond simple stage two modifications..

Get the DW 65c pump. It's $150 and take an hour to install at most.

I'm not sure of the logic behind this, considering the Walbro 255lph pump is more than adequate for half the price.

 

i never needed one for my stage 2

 

I would think with an upgraded pump you could squeeze out a little more power/run a little more boost..but I don't see why it would be mandatory..

Clark has expressed his issues with fuel pumps before, where they start not to provide adequate flow. It's something he wants on the car for your/his safety. If he's going to be tuning the car, listen to his advice.

I installed a Walbro when I went S2

 

Get the DW 65c pump. It's $150 and take an hour to install at most.

 

not exactly a thread jack since it affects the OP...

I was looking online at the walbro and it said 02-07 and 08+ with modifications...what are those modifications or is the site I was looking at have wrong info?

 

No, I was looking at the walbro

 

You mean you won't need the ziptie mods? Ehhh I'd take the extra money.

Posted from a fone.

 

I dont see how fuel pump has anything to do with injector duty cycle... the pressure and volume delivery are where the fuel pump chimes in.

That said, you can NEVER have enough fuel delivery on tap. The less the pump has to stress to deliver on demand the better. Run the walbro, especially if you plan to go further with your mods down the line. Its cheap insurance.

If you want to reduce duty cycle though, only a bigger injector will do that.. and they're not necessary for stage II.

 

I dont see how fuel pump has anything to do with injector duty cycle... the pressure and volume delivery are where the fuel pump chimes in.

The fuel pump has everything to do with injector duty cycle once you start maxing out it's flow and the pressure drops. When the pressure falls IDC must increase to maintain the same AFR.

 

So consensus is that it at the least is kinda cheap and will help the safety of the car/performance? Does kinda make sense now.

 

I would get it, especially if your tuner recommends it (much less requires!). Even if you won't technically max out the OEM fuel pump at stage two, overly sufficient flow is necessary for a safe tune. If you're at the limits of your fuel pump and something goes wrong [cold weather/up hill over boost, vacuum like pops off, etc] then you're going to hit high load super lean, which can kill an engine all at once. If you have extra pump and your tuner has taken the time to make a safe tune then you will overboost, but the fuel will be there and potentially save your ass. It's good tuning practice to go overkill on the fuel system at least a little.

 

Yup! Am just waiting for a quote now...