Full boost fuel cut

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#5434925 - 03/15/11 10:58 AM Full boost fuel cut
Steve8910 Steve8910 Post Master Sr Registered: 04/10/06 Posts: 4667 Loc: Murrieta, CA	Hello again old friend/new friends. Haven't posted in here in a while I know but the car has been running damn well until about a month ago. A little back story, had some issue getting it smogged so it sat for about a month and the battery died. Now in any gear other than first, when I get hit full boost with 100% throttle open at about 6k I get a fuel cut and a check engine light flash. I can get it about 60-75% throttle and it will rev all the way to 8k. I noticed my boost gauge is only reading 0 / -1 Vac now no matter what ( it doesn't move at all ) and my A/F Gage is just reading rich. I am hoping to get some time to look at it over the weekend so I figured I would ask you guys to see if you have places to start. I am thinking its some vac leak somewhere? Thanks for any help in advance too! _________________________ b16a w/ CP 9:1 Pistons & Eagle Rods [] RLD FAB Custom Ramhorn & 3" Downpipe[] Blockguard [] JDM LSD [] T3/T4 .60/.63 Trim Garrett [] Spearco Intercooler [] Hondata S300 [] RC 550cc [] HKS SSQV BOV [] Walbro 255lph Fuel Pump [] Greddy Profec B Spec II [] Greddy Auto Timer [] Custom 2.5" Intercooler Piping [] 3" Custom Exhaust [] Skunk2 Pro Camber Kit and Springs [] Skunk2 Duel bend short shifter [] 12" Slim Fan []
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#5436673 - 03/15/11 11:26 PM Re: Full boost fuel cut [Re: Steve8910]
RevEvSI RevEvSI Jr Poster Registered: 08/12/07 Posts: 75 Loc: Gorham, Maine	i was having the same problem, with mine, but mine is due to boost creep, im spiking at my stock map sensorat 9psi. same deal under full boost/throttle it would kill the gas, but like you said at 50-70% car runs great, but i havent noticed anything with my boost controller it always reads correctly. what are you running for a map sensor
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#5436675 - 03/15/11 11:27 PM Re: Full boost fuel cut [Re: Steve8910]
SiAdam SiAdam Post Master Supreme Registered: 07/22/01 Posts: 19308 Loc: USA	What ems are you using? _________________________ 05 Berlina Black S2000 700whp / 500wtq Built, not bought.
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#5437398 - 03/16/11 10:59 AM Re: Full boost fuel cut [Re: SiAdam]
Steve8910 Steve8910 Post Master Sr Registered: 04/10/06 Posts: 4667 Loc: Murrieta, CA	Honda s300 for ems, Map sensor is stock :\ _________________________ b16a w/ CP 9:1 Pistons & Eagle Rods [] RLD FAB Custom Ramhorn & 3" Downpipe[] Blockguard [] JDM LSD [] T3/T4 .60/.63 Trim Garrett [] Spearco Intercooler [] Hondata S300 [] RC 550cc [] HKS SSQV BOV [] Walbro 255lph Fuel Pump [] Greddy Profec B Spec II [] Greddy Auto Timer [] Custom 2.5" Intercooler Piping [] 3" Custom Exhaust [] Skunk2 Pro Camber Kit and Springs [] Skunk2 Duel bend short shifter [] 12" Slim Fan []
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#5438254 - 03/16/11 03:33 PM Re: Full boost fuel cut [Re: Steve8910]
Steve8910 Steve8910 Post Master Sr Registered: 04/10/06 Posts: 4667 Loc: Murrieta, CA	It was tuned to 10.5PSI about ... almost 2 years ago :\ _________________________ b16a w/ CP 9:1 Pistons & Eagle Rods [] RLD FAB Custom Ramhorn & 3" Downpipe[] Blockguard [] JDM LSD [] T3/T4 .60/.63 Trim Garrett [] Spearco Intercooler [] Hondata S300 [] RC 550cc [] HKS SSQV BOV [] Walbro 255lph Fuel Pump [] Greddy Profec B Spec II [] Greddy Auto Timer [] Custom 2.5" Intercooler Piping [] 3" Custom Exhaust [] Skunk2 Pro Camber Kit and Springs [] Skunk2 Duel bend short shifter [] 12" Slim Fan []
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#5438350 - 03/16/11 03:57 PM Re: Full boost fuel cut [Re: Steve8910]
00OldSi 00OldSi Sr Member Registered: 10/19/06 Posts: 1181 Loc: DC	Originally Posted By: Steve8910 It was tuned to 10.5PSI about ... almost 2 years ago :\ Shit thats a long time ago. Time for a fresh tune my friend! _________________________ "Step on it bitch..it's just turbo lag..!"
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#5438591 - 03/16/11 05:41 PM Re: Full boost fuel cut [Re: 00OldSi]
Steve8910 Steve8910 Post Master Sr Registered: 04/10/06 Posts: 4667 Loc: Murrieta, CA	Originally Posted By: 00OldSi Originally Posted By: Steve8910 It was tuned to 10.5PSI about ... almost 2 years ago :\ Shit thats a long time ago. Time for a fresh tune my friend! I only have 6k miles on that tune ( 5 mile commute to work and I was rotating driving a beater for while ). Could it be something as simple as this? I am going to hook up a laptop Saturday and run the hondata software to try and see if I notice anything. Maybe it is time I just called church again and setup an appointment! _________________________ b16a w/ CP 9:1 Pistons & Eagle Rods [] RLD FAB Custom Ramhorn & 3" Downpipe[] Blockguard [] JDM LSD [] T3/T4 .60/.63 Trim Garrett [] Spearco Intercooler [] Hondata S300 [] RC 550cc [] HKS SSQV BOV [] Walbro 255lph Fuel Pump [] Greddy Profec B Spec II [] Greddy Auto Timer [] Custom 2.5" Intercooler Piping [] 3" Custom Exhaust [] Skunk2 Pro Camber Kit and Springs [] Skunk2 Duel bend short shifter [] 12" Slim Fan []
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#5439288 - 03/16/11 11:54 PM Re: Full boost fuel cut [Re: Steve8910]
RevEvSI RevEvSI Jr Poster Registered: 08/12/07 Posts: 75 Loc: Gorham, Maine	i thought you couldn't run more than 10psi on a stock map sensor?
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#5439662 - 03/17/11 08:20 AM Re: Full boost fuel cut [Re: RevEvSI]
SiAdam SiAdam Post Master Supreme Registered: 07/22/01 Posts: 19308 Loc: USA	Originally Posted By: RevEvSI i thought you couldn't run more than 10psi on a stock map sensor? It's closer to 11psi, but some freakout @ 10, or 10.5 or even a little over 11. Depends how they are calibrated and the such. A new turn wouldn't hurt. Get a new 3bar sensor, swap it out @ the tune and turn that shiz up!! With your setup I'd think you would be well into the 400whp on their dyno. _________________________ 05 Berlina Black S2000 700whp / 500wtq Built, not bought.
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#5439689 - 03/17/11 08:37 AM Re: Full boost fuel cut [Re: SiAdam]
RevEvSI RevEvSI Jr Poster Registered: 08/12/07 Posts: 75 Loc: Gorham, Maine	ya im about to bring mine out for the summer, getting a new map sensor and retuned, but here i need to tune 2-3 times a summer. ill have numbers 350+whp, at 13psi. dont know if i should do more then that, no lsd.
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#5440449 - 03/17/11 12:44 PM Re: Full boost fuel cut [Re: SiAdam]
Steve8910 Steve8910 Post Master Sr Registered: 04/10/06 Posts: 4667 Loc: Murrieta, CA	Originally Posted By: SiAdam Originally Posted By: RevEvSI i thought you couldn't run more than 10psi on a stock map sensor? It's closer to 11psi, but some freakout @ 10, or 10.5 or even a little over 11. Depends how they are calibrated and the such. A new turn wouldn't hurt. Get a new 3bar sensor, swap it out @ the tune and turn that shiz up!! With your setup I'd think you would be well into the 400whp on their dyno. Sounds like I need to save up some cash and get this taken care of, Last tune they said I'm making about 10hp per lb of boost and I was thinking I could probably push 15psi so 350ish would be nice to drive around $\:D$ Here in socal the weather doesn't really change isn't very drastic so I'm glad I don't have to do that because I would be broke at $250-$300 a tune lol. Thanks for the advice guys! Always appreciated _________________________ b16a w/ CP 9:1 Pistons & Eagle Rods [] RLD FAB Custom Ramhorn & 3" Downpipe[] Blockguard [] JDM LSD [] T3/T4 .60/.63 Trim Garrett [] Spearco Intercooler [] Hondata S300 [] RC 550cc [] HKS SSQV BOV [] Walbro 255lph Fuel Pump [] Greddy Profec B Spec II [] Greddy Auto Timer [] Custom 2.5" Intercooler Piping [] 3" Custom Exhaust [] Skunk2 Pro Camber Kit and Springs [] Skunk2 Duel bend short shifter [] 12" Slim Fan []
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#5440502 - 03/17/11 01:01 PM Re: Full boost fuel cut [Re: Steve8910]
RevEvSI RevEvSI Jr Poster Registered: 08/12/07 Posts: 75 Loc: Gorham, Maine	ya we have similar builds, but im an ls turbo, with everything rebuilt nothing is stock in my motor, its great, but like i said i dont have a lsd so i don;t know if i need anymore then 350, i could if i wasnt peg legged. ya the weather here changes like crazy so 2-3 tunes a year at 200$, it does get expensive.
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#5440705 - 03/17/11 02:21 PM Re: Full boost fuel cut [Re: RevEvSI]
Steve8910 Steve8910 Post Master Sr Registered: 04/10/06 Posts: 4667 Loc: Murrieta, CA	Originally Posted By: RevEvSI ya we have similar builds, but im an ls turbo, with everything rebuilt nothing is stock in my motor, its great, but like i said i dont have a lsd so i don;t know if i need anymore then 350, i could if i wasnt peg legged. ya the weather here changes like crazy so 2-3 tunes a year at 200$, it does get expensive. The only thing I really have left besides the sensor is really just head work and idk if I wanna put more and more money into this car even though I do love it lol. I think i've hit that point of where I am content with how it runs, don't get me wrong it would always be fun to have more power but right now i'm pretty happy lol _________________________ b16a w/ CP 9:1 Pistons & Eagle Rods [] RLD FAB Custom Ramhorn & 3" Downpipe[] Blockguard [] JDM LSD [] T3/T4 .60/.63 Trim Garrett [] Spearco Intercooler [] Hondata S300 [] RC 550cc [] HKS SSQV BOV [] Walbro 255lph Fuel Pump [] Greddy Profec B Spec II [] Greddy Auto Timer [] Custom 2.5" Intercooler Piping [] 3" Custom Exhaust [] Skunk2 Pro Camber Kit and Springs [] Skunk2 Duel bend short shifter [] 12" Slim Fan []
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#5440969 - 03/17/11 03:38 PM Re: Full boost fuel cut [Re: Steve8910]
RevEvSI RevEvSI Jr Poster Registered: 08/12/07 Posts: 75 Loc: Gorham, Maine	ya i hear ya, i just got carried away and my whole project kinda snowballed into just doing everything. i may sell my head and get a gsr head, but i dont know if i want to spend any more money, and i dont really need that extra 35whp. Let me know what the problem is when you take a look at it, so i know.
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#5441048 - 03/17/11 04:10 PM Re: Full boost fuel cut [Re: RevEvSI]
Steve8910 Steve8910 Post Master Sr Registered: 04/10/06 Posts: 4667 Loc: Murrieta, CA	For sure I will let you guys know when I get some time to get it taken care of . _________________________ b16a w/ CP 9:1 Pistons & Eagle Rods [] RLD FAB Custom Ramhorn & 3" Downpipe[] Blockguard [] JDM LSD [] T3/T4 .60/.63 Trim Garrett [] Spearco Intercooler [] Hondata S300 [] RC 550cc [] HKS SSQV BOV [] Walbro 255lph Fuel Pump [] Greddy Profec B Spec II [] Greddy Auto Timer [] Custom 2.5" Intercooler Piping [] 3" Custom Exhaust [] Skunk2 Pro Camber Kit and Springs [] Skunk2 Duel bend short shifter [] 12" Slim Fan []
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