need turbo help on cpc stage ll

H

HOOCH256

Well-known member

Jan 5, 2008

1,357

318

83

38

Kalispell, MT

• Dec 22, 2013

• #21

x-ac-7 said:

How can I tell if fuel pump is going bad.? It'll still read good pressure if it's bad right? I put that different wastegate/actuator in, if that's adjusted wrong would that make it studder?

Click to expand...

It's possible, the other day I was riding I wanted to crank my boost up after cruising around at 7# so I gave the knob a few turns and she didn't like it would run up to about 9# and then fall on it's face and jump between 7-9#. Turned back to 7# didn't miss a beat. But I doubt this is your issue you really need to get a solid pull and check what your EGTs are reading. I'm running 1100 on long pulls at 7# which is def on the fat side.

 

A

Arctic Thunder

Well-known member

Dec 7, 2001

2,079

785

113

Lewiston, Idaho

• Dec 22, 2013

• #22

I personally would get a AF gauge and use it for tuning. The EGT's are just to slow to respond and to hard to see.

I would install the AF gauge and run it about 12.3 WOT. If you above that your to lean, below that your fat.

Again i wouldn't try and tune with EGT's.

Thunder

 

D

Duraslut

Free Member

Nov 6, 2012

116

12

18

• Dec 23, 2013

• #23

You say that your fuel is good. What is it at idle? I had the exact same studder like that on my 2010 cutler m8 and fuel pressure was at 32. I run it at 37. Was lean wot.

 

D

Duraslut

Free Member

Nov 6, 2012

116

12

18

• Dec 23, 2013

• #24

I also run an afr. I don't have temp gauges. When mine was studdering I saw my afr way high instantly. So checked my fp and it was to low.

 

H

HOOCH256

Well-known member

Jan 5, 2008

1,357

318

83

38

Kalispell, MT

• Dec 23, 2013

• #25

AF vs EGT is personal preference I know a ton of people who tune using EGT. But the only real true way is to check cylinder wash.