turboTwang6
New member
Hello, looking for some suggestions in figuring out a problem with ICP not getting above 1800 PSI. See details below.
This graph is from a little over a year ago - with Vivian's tunes. Truck was able to build 3500+ HPO Psi. I also notice PW stays below 2000 us.
This graph is recent. Probably last summer I changed to IDP's tunes, extreme street. Truck ran quite well after that, though over time I have noticed it has lost some power. You can see that ICP is not getting above about 1800 PSI. I also notice PW is getting up towards 2500 us.
Weak HPOP? Leaky injector? Truck starts fine, hot or cold, so I doubt its something with the STC fitting. I do have one injector that does not seem to want to fire well before the truck warms up, if taking off down the road before coolant/oil are somewhat up to temp, it will buck or shudder noticeably. I haven't gotten any cylinder contribution errors from that injector though.
Any ideas on how I can test this? Thanks for any and all help, this forum has been a pretty awesome source of information for helping with these things.
This graph is from a little over a year ago - with Vivian's tunes. Truck was able to build 3500+ HPO Psi. I also notice PW stays below 2000 us.
This graph is recent. Probably last summer I changed to IDP's tunes, extreme street. Truck ran quite well after that, though over time I have noticed it has lost some power. You can see that ICP is not getting above about 1800 PSI. I also notice PW is getting up towards 2500 us.
Weak HPOP? Leaky injector? Truck starts fine, hot or cold, so I doubt its something with the STC fitting. I do have one injector that does not seem to want to fire well before the truck warms up, if taking off down the road before coolant/oil are somewhat up to temp, it will buck or shudder noticeably. I haven't gotten any cylinder contribution errors from that injector though.
Any ideas on how I can test this? Thanks for any and all help, this forum has been a pretty awesome source of information for helping with these things.