# B18C Build Troubleshooting **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [April 9, 2008, 5:37am UTC](https://forums.speedlife.net/t/b18c-build-troubleshooting/196698 "2008-04-09T05:37:33Z")\ **Posts on this page:** 1\ **Showing post:** 62
**Author:** ![Hycomp](https://avatars.discourse-cdn.com/v4/letter/h/d6d6ee/32.png) [@Hycomp](https://forums.speedlife.net/u/Hycomp)\ **Post date:** [April 15, 2008, 7:34am UTC](https://forums.speedlife.net/t/b18c-build-troubleshooting/196698/62 "2008-04-15T07:34:56Z")
> [@help picking an enclosed trailer](https://forums.speedlife.net/t/help-picking-an-enclosed-trailer/35864/17): > > nothing I can do about he bypass holes. Are you 100% positive there are no adjustment screws, that will close off the bypass holes? If they are indeed just a passage from one side of the plates to the other you could just pull off the ITB’s and pack the holes with JB weld and then smooth them off once cured. > [@help picking an enclosed trailer](https://forums.speedlife.net/t/help-picking-an-enclosed-trailer/35864/17): > > Looking at the datalog was alarming. With NO throttle input the TPS signal voltage is all over the place, not steady at all. Ranges from .0V (where is should be) to 1.0V. Sounds like the TPS is shot or else the loose wire problem you reported previously is not correctly fixed. Also, I would be sure to check your input voltage and your output from the TPS with a multimeter to be sure of the values and not some odd problem with your modified ecu set-up. > [@help picking an enclosed trailer](https://forums.speedlife.net/t/help-picking-an-enclosed-trailer/35864/17): > > MAP sensor is seeing no less than 650mBar which is near the bottom right hand corner of the low cam fuel map (way too high for idle). MAP pressure actually starts high and as RPM rises the pressure displayed goes down. Could you please clarify the changes in MAP pressure? Are you seeing more vacuum initially or after a little while when the revs go up? --- _[View the full topic](https://forums.speedlife.net/t/b18c-build-troubleshooting/196698)._