Do I need to retune after i install my Walbro 255 Fuel pump? Would I need a fuel pump? Here are my mods so far.

Full TBE
HKS Intake
Manual Boost Controller at 26psi
Road tuned on 100 octane

 

No You dont really need it. Wont hurt of you use it but you must get tuned for it.

 

You should get a tune after any performance mod. Any. It's "_ALWAYS_ worth the money in the long run.

 

lol yea right you need to upgrade fuel pump if you plan on rocking more power thats the first thing so get one and install it. NOOOO you dont have to tune it after every part that is completely stupid and a waste of funds. install a host of parts then get it tune some of us dont live near any tuners so thats kind of a drive for a tune not to mention how much they charge for a retune. even if is only 150 adds up. so get some parts installed then tune. Take alook at my sig i have NO tune car runs perfect. your car will run richer with the 255 installed and no tune will not hurt it. You just are not getting peak preformace blah blah blah you can live with that So get like 5-7 engine mods then tune etc unless your one of those that has to have it running at its max after every little part then go ahead and get it done. ill tune mine for the first time after i finish engine build im in no hurry and im not racing anybody so ill take my time

 

So you're saying you're running a tbe, intake, a whole intercooler kit without a tune and you're suggesting others that this is the right way of doing it?

So you spent 2000$ on mods to gain about 50% of the power you should have gained from your mods.

Edit:

The point of getting a tune is getting your car optimised. Everyone explains running rich as something completely fine, while lean is bad. It's bad in both cases. You're wasting fuel, you're not making power that you should be and you're killing your sparkplugs.

 

Where are you getting that 100 octane fuel from? Do you DD your car?

 

+1 all those mods + no tune= losing so much power

 

Back on topic for the OP...NO you do not NEED a 255 lph pump for your mods, however if you opt to put one in, it is a good idea to have it tuned for it as you will be getting more fuel in the combustion chamber after the install.

 

If you are already tuned and install a fuel pump, you should get a retune. The higher flowing pump will change the AFRs at WOT and skew the fuel trims for closed loop.

Since this shift in AFR will be to the rich side, it's not really a danger to the car, but you will likely lose power from the richer mix.

Talk to your tuner about the cost of a retune for the FP. If it's just an AFR fix, it might not be very expensive at all.

 

A tune is always needed after adding mods to get the full potential of it. However it's stupid to have it tuned after every little thing you add. Wait until you get a nice group of mods bought, install them, and then tune.

 

for a fuel pump my answer is NO.

 

touringbubble hit it on the head

you'll run richer

it's not a hard install I'd recommend holding off until you do more mods or can afford a tune

installing a fuel pump and driving the car around for an extended period of time will kill your gas mileage and power output

 

Yes, this is what i'm thinking too.... I think that just hold back until you get all the mod you need and one time tuned.... if not, your car will be running richer....

 

Thanks guys for all your help. I will get retuned after i install new cams and a fuel pump.

 

I get it from Rebel. I dont daily drive my car. I use it for about 100 miles every month.