1SlowSi

Im running Hondata S200B, tuned, and when im boostin and shift into the next gear, there's like a sputter for a second and then it goes back into boost strong. This **** can cause me to loose a race. Anyone else experiencing this with Hondata? Its like its bogged down with too much fuel for a second.

miller

i would not blame it on the hondata, it is most likely in the tune!

therealPROJEKTEG

what size injectors? what fuel pressure? anything changed on the set up since it was tuned? how do your plugs look?

1SlowSi

everything's the same. The ONLY thing that has ever changed were my plugs. from 9's to 7's back to 9's, same gap, still does it. in the tune huh.. Must be the transistion to boost part of the map? If i was like cruising in 4th and hit the gas at WOT, it will do it. Its that instant WOT that does it.

static is 44psi FP, 750cc inejctors

SOHC_MShue

Are you running with closed loop enabled? My car hesitated going into boost with closed loop enabled. Now that i disabled it and tune part throttle it drives waaaay smoother.

1SlowSi

we did a street tune for part throttle so closed loop should not be running.

SOHC_MShue

oh ok. What is your tip in fuel enrichment set at?

1SlowSi

dont know. ask mase.

SOHC_MShue

hmm...well he probably would have it set right so i dunno then.

1SlowSi

ya. so many people i know have the same issue though.

Sprockets

iTrader: (6)

I have the same issue unless I shift fast. Also, if for instance I'm in 4th and rev to downshift and accelerate in 2nd, it will sputter and hesitate, then go. Same injectors (RC750 saturated).

seen4ever

notice to see if its happening at the same rpm & load point (Ie pressure reading on your boost gauge) when it happens. IE if its happening at 6500rpms @ 2psi, then its a tune issue.

might just need to have that portion of the map tweaked a little bit, or change the WOT tip in

therealPROJEKTEG

yeah, tune's don't just 'go bad'. if the car ran fine when it was tuned, and hasn't done this all the time, then it's more than likely something mechanical. what map sensor are you running?

Sprockets

iTrader: (6)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by therealPROJEKTEG &raquo;</TD></TR><TR><TD CLASS="quote">yeah, tune's don't just 'go bad'. if the car ran fine when it was tuned, and hasn't done this all the time, then it's more than likely something mechanical. what map sensor are you running?</TD></TR></TABLE>

That's a good question. 1SlowSi, what map sensor do you have? I'm running the SVE 3 bar map sensor that I got from Lightning.

used2baracer

sounds like "tip in" value is off

therealPROJEKTEG

how long ago was the car tuned? was it tuned in the winter or summer?

edit: i just realized who you are, lol. i'll talk to you tonight when you come by to pick up those dr's.

Mase

its the hondata being slow between the vtec crossover inbetween shifts. most of the time u can get rid of it.

1SlowSi

It could be. maybe we can take a look at this when i get home. BUT, when i cruise in a gear whether it be 3,4,5 and instantly go WOT, it does it. but not as bad. And its a GM 3 bar.


Modified by 1SlowSi at 8:54 PM 6/8/2005

Highrevs99

I had this same problem with my car when I went to a 3 bar map sensor and bigger injectors . The remedy is the tip in value for the bigger injectors but I am sure mase addressed this or the transiton from boost too rich . My case was the transition was too rich and Hondata talks about this problem under tuning tips on there site .

1SlowSi

im almost certain that its too rich.

Mase

its NOT the tip in. the ecu looks for certain map values before it switches cams. because its slow, it runs rich. its just a matter of trimming out a certain area of the cam change over

civicdx1

mine does the same it hesitates a little i give it more gas and it goes away.im running uberdata and rc 550's.

1SlowSi

Even though it does it while out of vtec? Steve, if we could, lets just take a look at this when im home. Ill be home for 2 weeks. hit me up sometime. later.