Hey guys,
So I’m doing some research on Vortech supercharger kit. I’ve already download and read the instructions a couple times. The kit comes with a fuel pump that gets installed on the frame rail and then plumbed into the supplied FMU. The factory pump still resides in the tank.

I don’t think it would be totally necessary to install the supplied fuel pump if the vehicle was already equipped with an upgraded in-tank Walbro 255. I’d still be running the FMU and all but I’m thinking the Vortech supplied pump would be unnecessary for a vehicle already equipped with the Walbro.

Let me know what you think

 

The FMU (in boost) supplies fuel at about 8:1 to the Vortech fuel pump. which delivers it (about 80 psi) to the fuel rails. What will the FMU be doing w/o the Vortech fuel pump?

With a RFS and a Walbro in tank you can ditch both the FMU and Vortech fuel pump as well as a lot of lines and potential leak points..

 

Go with the tuner kit and get a new pump with decent injectors. Like a DW or Aeromotive pump and some 600cc injectors.

 

Thanks guys,
That makes sense, I didn't understand the interaction between the Vortech supplied pump and the FMU so I'm really glad that I asked the question. I like the idea of running the upgraded in-tank with RFS and then getting the tune. I was going to get the tune anyway regardless of which fueling option I chose.

 

yes, i'm not a fan of that vortech BS. more areas to fail and when it fails you go crazy lean.

walbro with larger injectors will be perfect. adding a stage 0 CJM return system would be even better. CJM are fully upgradable later on if you wanted to go bigger too.

 

Dw300 ftw.

 

stock block won't max out a walbro 255 so why spend 60$ more?

took 507 hp to max out my walbro 255 on the vortech.

 

walbro 255 tends to break down for no reason and its loud as ****.

 

This!

 

actually i've heard of very few walbro failures across all platforms. They are actually very reliable. Can't really say that about the DW unit when it's only been out less than a year. Nothing to compare to.

Charles from CJM also told me when talking about walbro's quite a while ago he doesn't see very many failures in them either. Of course when there are people that have been running them for 10 years they will eventually wear out like all moving parts.

I have a twin pump setup with dual walbros and i barely hear them in my car. With my single walbro in tank there was zero change in noise. Any upgraded fuel pump will have more noise than something pushing less fuel therefore i would imagine that the other upgraded pumps (dw300 and aero 340) will both have more noise than stock. With a supercharger especially there is no way he will hear the pump over the s/c noise.

 

IMHO Walbros seems very reliable.

Personally, I never had one fail, or had a friend that had one fail, or ever known anyone local that had one fail.

It is my belief based on being around fuel system stuff for a long time, that Walbros may not be very tolerant of running dry. I come to that conclusion because cars like the 350z which do a pretty good job of keeping the pump wet, never seem to have Walbros fail. Then cars like the FD RX7 which do a terrible job of keeping the pump wet appear to be more prone to failure.

Cant say I have had any customer ever tell me they lost a Walbro in their 350z. Last week I just finally had what I believe is my first customer to ever need to replace one of the Walbros in our twin pump setup... even then I believe that he said they were not positive it was failed but they were suspicious.

 

So, is it a general consensus that a 255lph Walbro and a pair of DW600s would be all that is needed fuel wise?

 

has worked with great success for many people. Rods will fail before walbro will run out on a stock block.

 

Waldron is top notch in terms of longevity... DSM, subaru guys have been running them by us for years... Never heard of a failure either.

 

Won't name any names but one of our members destroyed his sh*t because he got lazy on replacing his 255.
I'd go for the 300 or better yet the 340. A pump that doesn't have to work as hard should in theory last longer, and 255's do have an unnervingly high rate of failure.

 

^^ not to argue or to discredit you, because you may have solid evidence... but at the same time, i wonder if its speculation. some members have been unfortunate enough to destroy their **** on more than one occasion without any solid known cause.

while i wont agree too quickly about Walbros being unreliable.. at the same time i would not steer anyone away from the DW or Aeromotive pumps. But do consider that Walbro is an OEM supplier.

All these options are quality and affordable and have a solid enough track record. There will be unfortunate customers with any product.

 

Bingo. 100% correct right there. Some folks just don't understand that, but this is the truth right here.

 

plus walbro's have been around a lot longer. These other pumps haven't even been out a full year so how can we say there are "zero" failures. Not enough people running them and for too little of time.

 

I agree 100% actually, just wanted to say that we do have case of even our guys breaking/failing because of them.

I was planning on running twin 255's for a while but just decided with a single veyron pump.

IMO for the money though, the price difference (what like 70$) the 300 is a better pump (more hp potential down the road).

For the record, he did tell me he knew it was going bad, and it was whining a lot he just got lazy and consequently detonated like fock. I *think* he had the boost a pump on it, and I know he was running a lot of power too so... Not really wanting to look through text messages to find out for sure though.

 

More hp potential yes but with only about 10 months of sales and maybe 1% of the amount of users that a walbro has seen there is no way to say that it has been around long enough to test the lifetime durability.

Nothing against DW, their injectors were some of my favorites but this is the first fuel pump they have made.

Aeromotive on the other hand has produced some serious flow externals before so at least they have some experience in the fuel pump game.

Still falls down to double the cost of a fuel pump that he won't even come close to maxing on a stock block. At what point do you draw the line for spending money on stuff that you can't utilize?