Impossible to hit boost target with meth injection
Posted: May 7th, 2018, 12:56 pm
Hi,
I actually have a strange problem about my boost target and meth injection. Just for the info, my boost target are 16psi/3000rpm and 21psi/3500rpm(gtx2867r). Forget IAT compensation, i dont have it at this temperature. And, all my 2018 logs were done in the same day
Last year, all was good about my boost target and i had a stable boost on WOT(20.5-21psi). But this year, its impossible to get target and stability. The map is exactly the same. The difference with last year is a new pump(exact same pump) and a catless downpipe
Now, boost target are very worst. Its pretty hard to get my 21psi. I get my 1st 20psi at 4500rpm and after that still between 19.5-20.5psi(big variation). And i begin to peak over 21-22psi at +5800rpm. Its like ECU trying to compensate the WGDC for get the right boost target and that finish to peak too much at high rpm. So, i tried to climb up my WGDC of +10%. Result, no real difference
At the start, i was sure i had a leak or maybe the catless changed something. So i tried a leak test where my injection is, no leak. So i decided to try my old 20psi map without meth injection(i unpluged my meth controller. Nozzle and check valve still there). Strangly, all my target are good and boost are very stable(19.5-20psi). So, its not because a leak or the catless
Im out of idea, i really dont know what is the problem. I post here my log for help you to understand. There is clearly a problem
Thx for the help!
Wot 4 21psi meth 2017(high flow cat and 500cc): https://drive.google.com/open?id=1qasCY ... SbVeGjFbA9
Wot 4 21psi meth 2018(catless and 500cc): https://drive.google.com/open?id=1FDV9d ... GwSNA_jY66
Wot 4 21psi meth 2018(catless, 500cc and +10% WGDC): https://drive.google.com/open?id=1TosYz ... sMJtPa1z8Q
Wot 4 20psi meth unpluged 2018(catless): https://drive.google.com/open?id=1trU7L ... 19dweivqja
I actually have a strange problem about my boost target and meth injection. Just for the info, my boost target are 16psi/3000rpm and 21psi/3500rpm(gtx2867r). Forget IAT compensation, i dont have it at this temperature. And, all my 2018 logs were done in the same day
Last year, all was good about my boost target and i had a stable boost on WOT(20.5-21psi). But this year, its impossible to get target and stability. The map is exactly the same. The difference with last year is a new pump(exact same pump) and a catless downpipe
Now, boost target are very worst. Its pretty hard to get my 21psi. I get my 1st 20psi at 4500rpm and after that still between 19.5-20.5psi(big variation). And i begin to peak over 21-22psi at +5800rpm. Its like ECU trying to compensate the WGDC for get the right boost target and that finish to peak too much at high rpm. So, i tried to climb up my WGDC of +10%. Result, no real difference
At the start, i was sure i had a leak or maybe the catless changed something. So i tried a leak test where my injection is, no leak. So i decided to try my old 20psi map without meth injection(i unpluged my meth controller. Nozzle and check valve still there). Strangly, all my target are good and boost are very stable(19.5-20psi). So, its not because a leak or the catless
Im out of idea, i really dont know what is the problem. I post here my log for help you to understand. There is clearly a problem
Thx for the help!
Wot 4 21psi meth 2017(high flow cat and 500cc): https://drive.google.com/open?id=1qasCY ... SbVeGjFbA9
Wot 4 21psi meth 2018(catless and 500cc): https://drive.google.com/open?id=1FDV9d ... GwSNA_jY66
Wot 4 21psi meth 2018(catless, 500cc and +10% WGDC): https://drive.google.com/open?id=1TosYz ... sMJtPa1z8Q
Wot 4 20psi meth unpluged 2018(catless): https://drive.google.com/open?id=1trU7L ... 19dweivqja