My Tuner and I checked the fuel pressure it's normal, hooked up the laptop and AFR's and tune looks fine. I rewired the MAP sensor again, and switched out MAP sensors. The only thing that fixed it was when we switched the dizzy off my tuners race car, the car made a few clean pulls up the road. So we replaced the igniter and coil with one from a 93ish accord (only one we could find laying around) and replaced the rotor and cap both brand new units.
Problem still remains after replacing parts in my old dizzy. So i'm thinking I need a new dizzy all together. I pulled the dizzy off my Daily Driver which is a OEM b17 dizzy and the car still sputtered, I just replaced the igniter and coil in that dizzy about 5 months ago. Any ideas if I just need a fresh NEW dizzy or is it something else?


Hopefully the vid below helps a lil, that is a WOT pull gas pedal to the floor:p

http://www.youtube.com/watch?v=LlPTEnYh_04

 

boost cut fuel cut???????

 

Did you replace your spark plugs?

 

thats the first place i always go lol

 

pretty sure it's not boost cut, car was only hitting 8psi and it's set @ 9psi. it felt like boost cut though at times. car feels like it hit a brick wall @ WOT and then just made a loud backfire. Stopped doing it yesterday though as we changed the dizzy's out and stuff. all it does now is what you see in the video. also my anti-lag doesn't build any boost. I checked the plugs they were fine and have less than 1,000 miles on them. didn't think to re-gap them though. what is the standard gap for cars on E85? i'm running the NGK 9's I believe.

 

go off the gate and see if you have the same issues

 

you mean run off the wastegate spring?

 

yes
then 2 step wont matter

 

yeah that's what the car is running off of.

 

so your just running on the gate right now meaning there is no vaccuum lines attached

not just turned down to 9psi in the ems

 

well there is a vac line running from the wastegate port to a fitting on my turbo. the spring in the WG is a 8lb spring.

 

definatly sounds like ignition. if it were your map sensor, the car would urn like shish all the time. try and cut off all 2 step limits, and be sure rev limit isnt where it sputters.. by chance

 

yeah it sputters right around where my 2 step is set, rev limit is 9k and I haven't gone anywhere near that:/ whatever the prob is it's load dependent, because the car will rev to 9k no problem if I give it 1/4 throttle all the way to redline, pulls smooth no issues, but the moment you press the pedal to the floor to build enough load to hit full boost it starts to sputter.

 

maybe i should have asked what ems you are on or if you are using 2 step through the ems or another way

i had an msd ignition box before and the 2 step in it was wack

 

i'm using ECtune and using the 2 step through the program.

 

hmmmm

so set the 2 step to 9k and see if you still have the issue at 6k this way 2 step shouldnt be an issue

in aem i can turn it off all togather

 

hmmmm... never heard of a 2 step interfering with a car in this way, but with these hondas i'm sure anything is possible and it can't hurt to try. i'll get up with my tuner later this week about it. thanks for the a input thus far, cause i've ran outta ideas.

 

yeah mine was doing this on the msd i would hit the are 2 step was set at andd bam it would start activating lol causing issues.

threw the damm msd junk away dropped in a pro14 and walla

 

plugs are gapped to .28 i'm gonna try and close it a bit to .18 and see if it changes anything.

 

mine were at .24. and i run 10's out the box now

 

switched to NGK 8's gapped to .28 still breaking up, tried another coil and igniter also and neither worked. pulling ECU out tonight and gonna check the internals, pulling fuel pump later this week as well. how loud are walbro 255's suppose to be? mine seems to have gotten louder since the other day, but my friend says it's normal. fuel pressure checked via the fitting on the end of the fuel rail came out good. if you pump was bad would it not show up in the test maybe? any chance you guys think my fuel filter is clogged? I have been running E85 for about 2 months now, think it cleaned out my motor and clogged the filter up by any chance?

 

Does your distributor have part number 5 installed? it's the dust/spark shield that goes under the rotor? If not that is what is causing your problem. Chased that issue on 2 different cars.

 

#9 heat range is WAY too cold for your power level on E85, put some 7s in it.. Also, you say your AFRs are good? you won't be getting an acurate reading if the car is breaking up. So its also possible its overly rich in that area and causing ignition breakup.

 

no my dizzy doesn't have that shield installed. how would not having that cause these types of problems? my car was running fine the past month up until last week. I will say I did notice alot of dust covering the rotor and inner cap though when I took it apart at 1st.

 

what about high boost though? car will be @ 400-450whp range on and off. the 337whp is just for low boost on the streets, are the 9's still too cold? when I pulled the plugs they looked fine. well the AFR's looked good until right before it goes into full boost it leaned out a lil bit if I remember and then the sputtering starts. I starting to think it's a the walbro 255 pump, it's got louder than it use to be, and it just started making a louder higher pitch hissing type noise since last saturday. the pump still makes its regular low tone drone, but the high pitch hissing is a completely different noise apart from the walbro pump whining. Any ideas Bugermass?