Iliketurbos94
Probationary Member
- 7
- 1
- Mar 10, 2018
-
DORR,
Michigan
Hello. If I'm posting in wrong area plz move. Haven't been here in a bit my build list prob isn't updated, but I noticed something odd happening today. I have a 20g Amazon turbo (15psi wastegate) that I've had installed for 2 years now. STM aluminum intake and filter MAF translator with 3 inch GM MAF. Stock intercooler, 3 inch turbo back custom exhaust and stock injectors. Fuel Labs regulator. Dietchworks fuel pump rewire. Hard boost pipes with crushed 1g BOV vented
I was driving an hr home from work and went to pass someone going slow, noticed the AFR was in the 14s at 7-10 psi mid throttle. I was messing with accelerating watching AFRs, it'll start out at 14.7 cruising go into the 12s when it changes from vacuum to pressure. And stay around 11ish from 5 ish psi at about 1/4 throttle. But when I accelerate more about half throttle it'll go lean into the 14s-15s and if I go WOT it'll dip from 14-15 into the 10s and break up lightly, couple misses here n there around 4-5k rpms. I was messing with the tuning slightly otw home and didn't get much results.
Haven't seen it do this before today.
Gonna do a boost leak test tomorrow at work and check spark plugs also gonna recheck the base pressure at the regulator. Might start over and try retuning if plugs and boost leak check out ok. Anyone have any insight on this? Also I do have 800cc FIC but I could not get it to run and drive decently with them. I swear I seen someone say 800s are too big for the MAFT?
Also MAFT has been relocated into my car that pic is 2 years ago when the build was new.
Edit: also have a catch can disregard that filter on valve cover
that was temporary
I was driving an hr home from work and went to pass someone going slow, noticed the AFR was in the 14s at 7-10 psi mid throttle. I was messing with accelerating watching AFRs, it'll start out at 14.7 cruising go into the 12s when it changes from vacuum to pressure. And stay around 11ish from 5 ish psi at about 1/4 throttle. But when I accelerate more about half throttle it'll go lean into the 14s-15s and if I go WOT it'll dip from 14-15 into the 10s and break up lightly, couple misses here n there around 4-5k rpms. I was messing with the tuning slightly otw home and didn't get much results.
Haven't seen it do this before today.
Gonna do a boost leak test tomorrow at work and check spark plugs also gonna recheck the base pressure at the regulator. Might start over and try retuning if plugs and boost leak check out ok. Anyone have any insight on this? Also I do have 800cc FIC but I could not get it to run and drive decently with them. I swear I seen someone say 800s are too big for the MAFT?
Also MAFT has been relocated into my car that pic is 2 years ago when the build was new.
Edit: also have a catch can disregard that filter on valve cover
that was temporary
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