255 or 255HP Walboro...

[RU2SLOW?]

Im tryin to do my supporting mods before I get my Evo 3 16G and I know I want to go with a 255lph pump and 550cc injectors. However, Im not really clear on what the difference is between the 255 and the 255HP. What's the difference, and what would be a better choice for my setup? Thanks in advance...

By the way I'll be lookin to get max hp out of the 16G setup eventually, since the funds department has crushed my t3/t4 dreams. Please keep this in mind when replying. Thanks again...

 

[chrisdob30]

I think the 255lph pump supports somewhere around 400hp. Alot of people have been able to get more than 300 out of the 16g. But if you do go with the 255lph, most people find that they need a fuel pressure regulator as well because it is known to overrun the stock one.

Chris

 

[RU2SLOW?]

Thanks for the reply. Yeah, I've read about the need for a FPR in many cases. I think I'm gonna just try the pump out first and order the FPR if need be later. I spoke to Nate at SBR and he told me that I really shouldn't need the FPR, so I don't wanna spend the money on something I might not need. However, I'm still curious as to what the differences are in the two pumps- the 255 and the 255HP. I'm hoping that if I can figure this out I might get a better understanding of which would work better with my goals.

 

[RU2SLOW?]

Is there anyone on the board that can help me with this one???

 

[4G63dsmpwr]

I ran a 255lph for about one year with no AFPR, with an 18G, AFC, and datalogger - no problems at all. Ran about 18 pounds of boost with .90-.92 O2 readings (for what they count for).

Not sure, but hope this helps let me know if you anymore questions.

 

[herostar]

the hp means it can run a higher pressure at the same flow rate... If you think you need that, then you might as well get a supra pump. IMO you only need a 190lph pump unless you plan on running a huge turbo. People have consistantly made over 400 whp with the 190 pump with no problems. Also, with the 190 you don't have to worry about a FPR

 

[quarter]

255 on a 16g car is like putting 900cc injectors on a 13g car.

just get a 190. it will be more than enough.

 

[markgholland]

OR... if you ever plan on upgrading further, why not get enough fuel to support the upgraded turbo and also get an AFPR that will make tuning ten times easier? I guess what I'm saying is that, you can get the 255HP for around $110, and a FPR that is set at stock pressure rate from Full throttle for $144 and you'll pretty much have a fuel setup that can support any turbo you'll ever want to run(A bit over exaggerated, but ya'll get the concept). Do it once, do it right.
~Mark

 

[RU2SLOW?]

Thanks for the replies everyone- this is definitely helping me get a better understanding about this. Let me try to tell you what I'm gettin from these replies and you guys tell me if I'm on the right track:

-Getting a 255 HP pump is just complete overkill, and unnecessary.
-The 190 will work just fine for the setup that I'm doing but won't leave room for upgrade later.
-A regular 255 will leave room for an upgraded turbo later, but may or may not require the use of a FPR now.

My only remaining issue now is that I want to get the absolute most power out of the 16g that I possibly can. In saying that the 190 pump has made over 400 whp without any problems, is it safe to say that a 190 with 550 injectors will give me more than enough room to maximally tune my Evo 3 16G setup, or will I be close to maxing out this fuel setup??? I just don't want to cut myself short with something as important as fuel and have to worry about it later.

BTW...I'm a rookie when it comes to tuning- this will be my first time- so I would rather have a setup that may be a little forgiving for my lack of experience if at all possible.

 

[herostar]

people use the 190 maxing out a 50trim turbo... to completely max out your evo 16g you may want 660cc injectors though. The 190 is all tue fuel pump 90% of the people on here will need.

 

[Groomz]

Originally posted by herostar
people use the 190 maxing out a 50trim turbo... to completely max out your evo 16g you may want 660cc injectors though. The 190 is all tue fuel pump 90% of the people on here will need.

These people are correct. The 190lph pump is more than enough for a turbo capable of 550+cmf's. I would get 660cc/min injectors, as the Evo could definitely use them.

The Supra TT Nippondenso pump is good too, but needs an FPR. Also, the 255 or 255HP will need a real AFPR, not the B&M crap unit. Just make sure not to buy the 255 and post about how the car runs like crap, Leet might get angry.

 

[quarter]

Originally posted by herostar
people use the 190 maxing out a 50trim turbo... to completely max out your evo 16g you may want 660cc injectors though. The 190 is all tue fuel pump 90% of the people on here will need.

exactly. even if he wants to upgrade, a 190 will still be good enough.

 

[kpt4321]

I'm not going to get into the 190 vs 255 argument, because you guys covered that pretty well.

However, with regard to the 255 vs. 255HP. There is absolutly no reason not to get the high pressure version. Both of the pumps flow about the same at idle and cruise, so neither one is different there. However, the high pressure pump simply has a tighter relief valve, so that flow doesn't taper off when you start cranking the boost.

 

[wastefuldreamer]

I plan to run the 190 with my evo III and thanks to this thread i plan to run the 660's thank guys

 

[wastefuldreamer]

I plan to run the 190 with my evo III and thanks to this thread i plan to run the 660's thank guys

 

[RU2SLOW?]

Thanks a ton guys- I appreciate all of you who took the time to contribute to this thread. When I first posted this I was kinda cringing, waiting for the "use the search button" responses. Sometimes it's hard to search for someone else's threads and apply them to your own specific situation though, so thanks for getting into such detail so myself and others in my shoes can understand the fuel pumps better. Because of this thread I too am going to go with 660 injectors and the 190 fuel pump. Next step- learning to tune...