Dyno Dissapointment

[MistahJuice]

So had some dyno disappointment yesterday. Only made 163hp 122tq (that's like 10hp over a stock GSR) because the tuner didn't want to tune my car any higher without a better fuel pump. Said it was running way lean and I need to get a walbro and come back. I currently have a walbro 190lph in the garage that I totally forgot to install, but from what I've been reading most people use the 255lph, do you guys think that the 190 will be enough? From what I've found a stock GSR/ITR fuel pump flows at 131lhp where as my shitty d series makes 70lph so I definitely knew I should upgrade just forgot I had it sitting in the box. Is a 190 suitable for my build though

GSR:
Skunk2 Stage 1 Cams
USDM Type R pistons
DC JDM 4-1 - 2.5 in S2000 Cat - 2.5in piping - 2.75 in muffler
aem short ram


Future: skunk2 or edelbrock performer x manifold

I just want to make sure fueling won't be a problem. Also tuner thinks I have to straight pipe it but the s2k cat comes ready for in creased flow/horespower/revs from factory and I've seen dynos with people making 190whp with stock cats so I don't think I'm gonna, but I'd love to hear your feedback.

 

[crash!]

Does this guys dyno test low? Sometimes they test low.
Like the guy who I want to get my tuned from, his dyno tests 11% low.

I think 190 is plausible for your set-up. Since you have the higher comp ITR pistons that will help you out. What is your compression?
Also, is that all your engine mods? Do you still have the GSR valvetrain?

 

[2slo4u]

either 190 or 255 will do..255 if you plan on doing more down the line but 190 is plenty for an N/A set up and even some boost set up's
any plans for some injectors?

 

[MistahJuice]

Alright cool thanks 2slo. And Crash I have Skunk2 Tuner Valvesprings and Crower Chromoly retainers cuz I didn't want to do titanium. Also according to http://www.zealautowerks.com/bseries.html I should have about 11.04:1 static compression maybe a tiny bit higher from head resurface but not a useful amount more lol. And it was on a dynojet but I think he just tund the partial wot I guess you would say because he kept saying it was running to lean but it doesn't idle like s**t like it did when I first installed the cams, nor is there a flat spot between 2500-3000 rpm while I'm driving anymore anymore.

Guess I'll just slap in the fuel pump and go back and see if I can hit at least 175whp as it is then pick up a skunk2 mani and bore out my throttle body later. Might as well throw this shitty dyno graph in my build thread haha, learning experience after all

 

[crash!]

Yeah my buddy had a fully built B20V in his car, 258hp and the fuel pump wasn't strong enough so it detonated and melted a piston.

So I would highly recommend it. Your tuner was smart and didn't want to be liable.

 

[Billy.]

I made over 280whp with a stock fuel pump (em1). Drove it 65K miles without replacing the pump on TOP of the original 180K it already had, and sold the car. It's still going strong apparently. I'm pretty sure it's not your pump that's leaning you out...

 

[speedygonzales]

I'm pretty sure he said he was still using the old d series fuel pump

 

[emerican]

^ this he said he was so that would be the reason and its a good tuner that he wouldnt max it out protect him of course but also protects your motor.

 

[Billy.]

Thanks for clarifying. I didn't read all the way through. Just don't want people to underestimate the stock pump's power potential. It rarely needs to be replaced for any N/A project, or most low boost setups.

 

[crash!]

I wouldn' think it'dt be a terrible idea to do if you're able to

 

[2slo4u]

I wouldn' think it'dt be a terrible idea to do if you're able to

i think its just like how people think they need to upgrade every single fuel upgrade you can when boosting a car such as the fuel rail, fpr, and the fuel pump
i built my motor with the stock rail and fpr when most shops were trying to make me buy there rails and fpr's..i rather spend money on useful things than parts that people just put on for looks most of the time..all depends on the tuner and his skill

 

[crash!]

I was thinking about it as a preventative measure.

 

[2slo4u]

i agree though, nothing wrong with having one installed

 

[Billy.]

i think its just like how people think they need to upgrade every single fuel upgrade you can when boosting a car such as the fuel rail, fpr, and the fuel pump
i built my motor with the stock rail and fpr when most shops were trying to make me buy there rails and fpr's..i rather spend money on useful things than parts that people just put on for looks most of the time..all depends on the tuner and his skill

 

[Zedicous]

So had some dyno disappointment yesterday. Only made 163hp 122tq (that's like 10hp over a stock GSR) because the tuner didn't want to tune my car any higher without a better fuel pump. Said it was running way lean and I need to get a walbro and come back. I currently have a walbro 190lph in the garage that I totally forgot to install, but from what I've been reading most people use the 255lph, do you guys think that the 190 will be enough? From what I've found a stock GSR/ITR fuel pump flows at 131lhp where as my s***ty d series makes 70lph so I definitely knew I should upgrade just forgot I had it sitting in the box. Is a 190 suitable for my build though

GSR:
Skunk2 Stage 1 Cams
USDM Type R pistons
DC JDM 4-1 - 2.5 in S2000 Cat - 2.5in piping - 2.75 in muffler
aem short ram


Future: skunk2 or edelbrock performer x manifold

I just want to make sure fueling won't be a problem. Also tuner thinks I have to straight pipe it but the s2k cat comes ready for in creased flow/horespower/revs from factory and I've seen dynos with people making 190whp with stock cats so I don't think I'm gonna, but I'd love to hear your feedback.

190 is perfect, if you go boost you'll need the 255. But if you go 255 now you'll need a regulator to bump it down. I have ran a 190 for years now on my b16.

 

[Billy.]

08Would recommend NY Escort the 3M wrap NY Escorts course at William NY Asian Escort Smiths done by Andrew Gamble, also the Grafityp NY Asian Escorts course as already mentioned which from memory is done by James Deacon (could be wrong put 90% sure he does it). 207 East 37th Street Apt 4D, New York, NY 10016-3154
(646) 452-9377

 

[XpL0d3r]

Taken care of!

 

[Hendo]

190 is perfect, if you go boost you'll need the 255. But if you go 255 now you'll need a regulator to bump it down. I have ran a 190 for years now on my b16.

Don't all fuel rails have pressure regulators on them..?

 

[Blayze2010]

Either 190 or 255 will do..255 if you strategy on doing more down the range but 190 is a lot for an N/A set up and even some increase set up's. . . . .

Isnt this nearly the exact post as post #3? lol

 

[Failsafe88]

This is frome june