Sniper Timing Question

M

Moistbois

Member

Dec 20, 2021

6

1

13

Pittsburgh, PA

Dec 28, 2021

#1

• Dec 28, 2021

• #1

I have a 289 bored .040 with forged pistons with a decent cam. It has afr 185 with upgraded springs. Im using holley sniper with hyperspark dist. (Msds wires) I can only get it to run/idle decent @25 degrees timing. Still bogs down and has mainly exhaust backfires but an occasional intake. Anyone have any suggestions/ideas on timing/target fueling/target afr?

 

Husky44

10 Year Member

Sep 27, 2006

865

104

74

Tacoma, WA

Dec 28, 2021

#2

• Dec 28, 2021

• #2

You might have better luck either in the Digital Self-Tuning forum or on the Holley site. Not a lot of us in the vintage world doing tuning with EFI. I'm still learning myself, so I'm not any help to you.

 

M

Moistbois

Member

Dec 20, 2021

6

1

13

Pittsburgh, PA

Dec 28, 2021

#3

• Dec 28, 2021

• #3

Thanks for the reply. I called Holley and the said talk to your tuner…I’ll check over at Holley forums. It’s going to run one day…..

 

Reactions: Husky44

M

Moistbois

Member

Dec 20, 2021

6

1

13

Pittsburgh, PA

Jan 15, 2022

#4

• Jan 15, 2022

• #4

Turns out it is a fueling issue. Adjusted the afr to be very rich and this cleared alot of the lag and bogging.