Do i need a fpr

[an orange crayon]

i have a walbro 255 but i will run stock injectors with a 16g turbo. Ive read in a few places to get a fpr, but do i really need one?

 

[avengerscoot]

I have been on the topic of an afpr with a friend of mine and he says i don't need one. I put one in after putting in 550's and the wally and the throttle response now feels so crisp as compared to before. Also since i noticed alot of people use ECMLink, i will say this. Yes technology has evolved over the years, but does it make me wrong to not want to use all that tech and run the way they did just a few years ago? Call me old school but, i'll stick with what worked before. don't get me wrong, i understand advancements and what-not, i just like the older days.

 

[gtrej01]

I think what this guy means (I could be wrong) but the TRU boost gauge reads up to 35lbs of boost and the boost meter is going up 70 percent of the way on the boost gauge. So 70 percent of 35 = 24.5lbs of boost

Nope! Below is what I ment per the AEM website:

WHAT IT DOES
AEM’s TRU-BOOST Gauge-Type Controller is an electronic boost controller that combines the simplicity of a manual boost controller with the added ease of adjusting boost levels through a gauge interface. There is no external interface required for set up, and it is fully functional right out of the box. There are no gimmicks or special software programs included. If you want more boost press the button on the right of the gauge face, and if you want less boost press the button on the left of the gauge face. It’s that simple, and IT WORKS!

 

[ramsack]

Another thing to consider, that everyone here conveniently ignores is, you're not going to get what the injectors are rated at without an AFPR. Stock 1g fuel pressure is 36.3 psi, but injectors' flow rates are rated at 43.5 psi. Even the stock injectors can be pushed farther with some tuning and running the correct pressure. I wouldn't really call it pushing them, just running the pressure they're rated for. Pushing them would be running them beyond 43.5 psi. Plus, any 255 pump will overrun the stock FPR and kill it quickly.

 

[LiquidX]

Nope! Below is what I ment per the AEM website:

WHAT IT DOES
AEM’s TRU-BOOST Gauge-Type Controller is an electronic boost controller that combines the simplicity of a manual boost controller with the added ease of adjusting boost levels through a gauge interface. There is no external interface required for set up, and it is fully functional right out of the box. There are no gimmicks or special software programs included. If you want more boost press the button on the right of the gauge face, and if you want less boost press the button on the left of the gauge face. It’s that simple, and IT WORKS!

That is just how an EBC, what is 70% you are running?

Again, it would be worth while to take a Bay picture as I'm sure there is an afpr already.

 

[gtrej01]

That is just how an EBC, what is 70% you are running?

Again, it would be worth while to take a Bay picture as I'm sure there is an afpr already.

here is the best pics I could take with my phone.

 

[LiquidX]

Looks to be a stocker. I would still recommend getting an AFPR to ensure that your injectors are set properly especially being that large so your tune will be accurate.

 

[se7enine]

Upgrading your ride is addicting so better to get the AFPR now because it will be needed eventually. It will help you to tune much better and get the most out of your engine.

 

[fallenauthority]

The car is tuned to run on 35lbs of boost but I was told i can run a certain % through my AEM Tru boost gauge. It is currently set at 70 % of 35 lbs.

Correct me if Im wrong but that is what I was told.

Wrong

Maybe you are referring to your injector duty cycle (IDC) at 35 lbs of boost

And Wrong.
What you see on your AEM Tru-Boost is your boost control solenoid DUTY CYCLE. The Duty Cycle is at 70%.

 

[Dsm Rob]

I have a 255 fuel pump and been running a 2g fuel rail and evo 8 fpr and i've never ran into any issues. Much cheaper then spending $200 + on an afpr setup imo.

 

[jrohner]

I have a 255 fuel pump and been running a 2g fuel rail and evo 8 fpr and i've never ran into any issues. Much cheaper then spending $200 + on an afpr setup imo.

Yeah I think the Evo 8 fpr is supposed to flow better. I've still never seen a reason to spend the money on an afpr; I've had/tuned on a few DSM's with 255HP's and have never had an issue with fuel trims or afr's that would indicate a problem.