Holley released EFI update for Sniper progressive linkage
Thread Starter
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Holley released EFI update for Sniper progressive linkage
So the basic order of things I did was:
- Install Holley Sniper EFI on the big block (great success, but very, very touchy, non-progressive throttle)
- Converted throttle body to Progressive Linkage (much better action, but now bogs due to bad calibration of delta TPS)
- Added newest Holley firmware
- Changed TBI settings to Progressive
You couldn't do this last required step until Holley added it to the firmware (well you might have been able to with the laptop version manually, but not easily). But now that they have the calibration available for it, if you're using the Sniper throttle body setup, I -highly- recommend that you upgrade the firmware and apply the calibration change that goes with it!
- Install Holley Sniper EFI on the big block (great success, but very, very touchy, non-progressive throttle)
- Converted throttle body to Progressive Linkage (much better action, but now bogs due to bad calibration of delta TPS)
- Added newest Holley firmware
- Changed TBI settings to Progressive
You couldn't do this last required step until Holley added it to the firmware (well you might have been able to with the laptop version manually, but not easily). But now that they have the calibration available for it, if you're using the Sniper throttle body setup, I -highly- recommend that you upgrade the firmware and apply the calibration change that goes with it!
Last edited by davepl; Dec 20, 2018 at 10:04 AM.
Racer
Joined: Nov 2011
Posts: 285
Likes: 36
From: Cedar Park TX
So the basic order of things I did was:
- Install Holley Sniper EFI on the big block (great success, but very, very touchy, non-progressive throttle)
- Converted throttle body to Progressive Linkage (much better action, but now bogs due to bad calibration of delta TPS)
- Added newest Holley firmware
- Changed TBI settings to Progressive
You couldn't do this last required step until Holley added it to the firmware (well you might have been able to with the laptop version manually, but not easily). But now that they have the calibration available for it, if you're using the Sniper throttle body setup, I -highly- recommend that you upgrade the firmware and apply the calibration change that goes with it!
- Install Holley Sniper EFI on the big block (great success, but very, very touchy, non-progressive throttle)
- Converted throttle body to Progressive Linkage (much better action, but now bogs due to bad calibration of delta TPS)
- Added newest Holley firmware
- Changed TBI settings to Progressive
You couldn't do this last required step until Holley added it to the firmware (well you might have been able to with the laptop version manually, but not easily). But now that they have the calibration available for it, if you're using the Sniper throttle body setup, I -highly- recommend that you upgrade the firmware and apply the calibration change that goes with it!
Race Director
Joined: Jan 2000
Posts: 13,022
Likes: 2,264
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
When I first installed the Holley Dominator EFI on my car....I used a 4500 sized throttle body with 1 to 1 linkage. Incredible throttle response...but as you mentioned...pretty touchy. I let some other folks drive it and they had trouble keeping it smooth with that sort of throttle response and 555" inches on the other side of the throttle blades. I converted to progressive...much like I had done on the previous Dominator carb and it smoothed it out a lot,
Hard to believe we'd ever complain about "too much" throttle response isn't it?? LOL.
EFI can manage huge increases in airflow even at low speeds without a hiccup. Cool stuff!
JIM
Hard to believe we'd ever complain about "too much" throttle response isn't it?? LOL.
EFI can manage huge increases in airflow even at low speeds without a hiccup. Cool stuff!
JIM
Race Director
Joined: Apr 2003
Posts: 19,353
Likes: 654
From: Tampa, Florida
