Hi...I am asking this for a friend. He has a drag gen 3 kit on his B18c. Before he was running FMU/missinglink/255lph "intank" high pressure fuel pump. I convinced him to pop in an inline high pressure for good measure, the problem is...after the install, his car begins to bog and stutter around 6500-7000rpm. Anybody know what the problem is?

Khoi


Modified by Sohc Driver at 12:10 AM 4/2/2004


Modified by Sohc Driver at 11:17 AM 4/2/2004

 

bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sohc Driver &raquo;</TD></TR><TR><TD CLASS="quote">Hi...I am asking this for a friend. He has a drag gen 3 kit on his B18c. Before he was running FMU/missinglink/255lph intank high pressure fuel pump. I convinced him to pop in an inline high pressure for good measure, the problem is...after the install, his car begins to bog and stutter around 6500-7000rpm. Anybody know what the problem is?

Khoi


Modified by Sohc Driver at 12:10 AM 4/2/2004</TD></TR></TABLE>

Are you running the intank and inline together? That might be too much fuel causing it to stutter. Try taking out the intank and replacing it with the stock pump. Leave the inline where it is.

 

arturbo said it would be fine

 

does the flow rate of the inline booster match the pump?

 

They are both 255 high pressure pumps

 

bizzump..anybody?

 

well...we hooked up a wideband to the car and ran it to figure out what was going on...Turns out he was running damn rich running both the 255 inline and intank high pressure pumps.....We ended up keeping both pumps in however and leaned out the map a little with a VAFC. The motor runs a lot better now, but we'll continue with the tuning tomorrow. At WOT from 3rd gear cruising at 45mph, the A/F starts at 14 @ 3000rpm and begins to drop to 11-12 by around 5000rpm and stays constant all the way to redline. We called it a night and will get the A/F 11-12 across the board tomorrow. Just wanted to give a heads up to everbody. I remembered a few threads in the past claiming that running an intank and inline high pressure pump together does not make you run rich. But indeed, it does after all and today's wideband run proved it.

Khoi

P.S Here are some of the threads that I was talking about:

https://honda-tech.com/zerothread?id=158293

https://honda-tech.com/zerothread?id=158062

 

Shoot for 12, 11 may be a little rich.

 

we are shooting for an A/F somewhere inbetween the 11-12 range...not shooting for a solid 11:1 ratio. However we are trying to keep it very conservative considering that this is a JDM spec Type R. With an 11.1:1 compression ratio, conservatism is very much desired


Khoi

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by calmweed &raquo;</TD></TR><TR><TD CLASS="quote">I love it. "were trying to be conservative b/c my friend has a JDM 11.1:1 compression engine" but then you look at the fuel management you have and its 100% crap. You expect a car to run well with no fuel management? Man, if i had a B18c that car would not be on a FMU...a D16 i could see running a FMU with, but a B18c....jesus christ...

Conclusion: The car runs like **** because there is no fuel management.</TD></TR></TABLE>

You are a complete idiot...post something useful. You don't know anything about our plans for fuel management. We are only trying to get the car to run reliable for so that we can make a 9 hour trip to Houston to get his car up and running to get tuned with hondata. Go to hell you *** Hat...you don't think we know there are better fuel management than an FMU around. All we wanted right now was to get the car boosted and running correctly. And the FMU works fine, there are plenty of people running the FMU on low boost. Whether its a type R, B16, or GSR..it doesn't matter..as long as the motor is tuned well there are no problems.

Conclusion: Your an idiot, car was not running like crap because of the FMU...car was running crap because we ran pig rich from running two fuel pumps.

Khoi

P.S people like you need to get a life instead of spurting out ignorant/one sided remarks.





Modified by Sohc Driver at 11:32 AM 4/3/2004

 

TTT

 

TTT