Thread: what to do 10.0 AF ratio

Got a GTi-R swap on my B13.
I still got some issues to fix, like the leak I have on the little vacuum box underneath the intake.
It's basically a stock GTi-R with a FMIC and 3" DP and custom exhaust with a stock GTi-R ECU, MAF and Injectors and a Nismo FPR with the 1 bar loop.

Car pulls like crazy, very strong, but AFR shows around 11.5-12.0 from 7 to 11psi, but over that, it goes crazy rich to 10.0.

How can I fix this? Will I need a Calum ECU?

Get a calum ecu and run 4 bar.

Dude, before you go off and add ANYTHING, you need to work out the kinks with your motor, first. Don't just run out and think you're going to solve problems by buying more stuff for the car. This could in effect only make it harder for you to isolate the problem with ease.

Fix your leak, first.

I know I need to fix the vacuum leak.. the problem is that the vacuum box is unreachable inside the engine bay. I have programmed for the next week to try to fix it from below, when I take down the steering rack to fix an fluid leak.

This vacuum leak is the only problem left out.

how bad is your vacuum?

Vacuum fluctuates in between 14 to 16. The leak is just where the booster connects.

definitly fixthat vacuum leak, im with tekie on this ix the current probles and see where you stand after that

i'll leave it as is. I don't have time to work on the car. This vacuum leak cannot be fixed without taking out the motor out.
thanks

tho deending on how large the vacum leak is you are going to be drawig in unmetered are into the engine causeing air fuel ratio problems along with idling problems like isaid depends on how large

dont know on the gtir, but vacume SHOULD be around 18 i think, so.....the smallest leak can do some wierd stuff.