Installed xs mbc HITTING FUEL CUT OFF
Oct 5, 2004, 06:32 PM
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Installed xs mbc HITTING FUEL CUT OFF
Ok my cars been running 16 lbs. and droping to 13 and i could find leaks or anything anywhere. So i re-did all the boost lines and hooked up my turbo xs boost controller. After hours of driving taking my time to get it right i got to about 18-19 constant (DAMN SWEET) Anyways i decided i wanted to hit 20. I messed it all up cant even get it to run over 15 without hitting a fuel cut. Then i have to re-set the bat. to get rid of the fuel cut when running anything below 15. I have no clue whats going on! I should'nt have messed with it but i did. Has any1 ealse experienced this. And with the standard turbo xs boost controller ive been tuning it with only the top alan (sp) key. Theres another controll on the side i didnt want to mess with it since i had it running right. Anyways Give me some advice.
Eric
Eric
Oct 5, 2004, 11:46 PM
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It's either your boost gauge is defective or you have hooked up the boost line incorrectly. Your getting boost/fuel cut because your probably boosting past 25psi or so and not realizing it because your gauge is only showing you 15psi. I would have a pro installer look at your boost gauge install.
Second, you say you have a standerd Turboxs mbc but you also have another nob on the side? I think you have the Turboxs HPmbc. Anyways, if it's the HPmbc, then you need to open the other nob on the side too. I can't remember exactly how to right now so I would suggest you get in touch with Turboxs.
Second, you say you have a standerd Turboxs mbc but you also have another nob on the side? I think you have the Turboxs HPmbc. Anyways, if it's the HPmbc, then you need to open the other nob on the side too. I can't remember exactly how to right now so I would suggest you get in touch with Turboxs.
Last edited by GREDDY; Oct 5, 2004 at 11:51 PM.
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Oct 6, 2004, 10:33 AM
#9
Did you make sure to cap off the factory boost solenoid?
I have my XS MBC hooked up to the WGA and the Turbo outlet. Then I have the intake nipple capped (its on the bottom side of the intake pipe), as well as the 2 outlets on the boost solenoid capped. My MBC works great, I just turned it up to 23psi this last week while running race gas. No studder, no fuel cut, no CELs.
Check your connections again and make sure everything is capped off that needs to be. Also, if you have the HP MBC (like I have) make sure that the bleeder valve is at least 2 full turns open and the ball and spring is just tight enough that you cannot hear the ball moving around inside before you start your adjustments.
I have my XS MBC hooked up to the WGA and the Turbo outlet. Then I have the intake nipple capped (its on the bottom side of the intake pipe), as well as the 2 outlets on the boost solenoid capped. My MBC works great, I just turned it up to 23psi this last week while running race gas. No studder, no fuel cut, no CELs.
Check your connections again and make sure everything is capped off that needs to be. Also, if you have the HP MBC (like I have) make sure that the bleeder valve is at least 2 full turns open and the ball and spring is just tight enough that you cannot hear the ball moving around inside before you start your adjustments.
Oct 6, 2004, 02:15 PM
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I thought i hooked it up backwards. Tryed it the other way still the same outcome. I went from the wastegate and then caped the line of by running it by the maf sensor like under the intake i just rerouted it to the open spot.
Oct 6, 2004, 02:34 PM
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ok that doesnt make sense. I went by using the instructions on the how to forum for a diffrent mbc. but took off the who line from the waste gate and ran one straight from the gate to b/c and he line from the silinoid from where the maf sensor is i ran a loop to the open hole and ran a t from the vacume line off the bov. On the b/c its self i ran the line from w/g to the copper nipple and the vacume from bov to the blue.Turned the fine adjustment 2 full turns and the other starts with a C nob i turned just to w/e i can run something decent with. Now Im running hell of high boost and cant seem to turn it down w/ no fuel cut off which leads me to thing i need to swap the lines back around but w/ that i was getting the fuel cut off. So for the moment i switch at 3 rpm so i dont spool to 25psi........
Oct 7, 2004, 12:05 PM
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sscrew it i have something seriously wrong.....Made appt. AR fab. Winchester 75 dianostic 75 to re hook it up..........Hopefully its something stupid
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