Holley question

SSDiv6 · 04-03-2017, 11:22 AM

Quote:

Originally Posted by Rod Greene

It seems that guys either love the LM2 or hate it. I posted this same question on another website and they can't say enough good things about Innovate. Makes it difficult to decide. The Daytona is a bunch more money and I had never heard of them until now. Maybe I should just buy a Racepack and make it portable.
Keep the suggestions coming guys.

Rod, I suggested the Daytona Sensors because you stated you wanted a good unit to use in the future in other projects.

Therefore, if cost is the issue, I would recommend the NGK unit. It works great and very affordable.

I can assure you there are many that have been disappointed with the LM-2 units due to issues and not being reliable.

GallopinGhost · 04-03-2017, 01:01 PM

My problem with the LM-2 was with rpm. It would not display, record, or playback anything over 2K rpm. I tried multiple work arounds as per their tech support. After a year of playing around with it, I accepted the fact it didn't work as advertised. AFR displays ok.

Myron Piatek · 04-03-2017, 01:06 PM

The amount of jet change needed when blocking off the power valve is determined by the PVCR (power valve channel restriction) - the 2 little holes under the power valve in the metering body. That can be as high as 10. But I never used the formula.

As for using the vacuum reading "at idle, in gear", it's just a reference to make sure that the power valve you start with isn't opening at idle, in gear. If the reading is 7" of vacuum, you'll need a power valve below that to avoid a constant over-rich condition - i.e.: 6.5, 5.5, etc.). It's simply an on/off switch. But as mentioned, it's often eliminated in a race application with success. It's more important in a street application that spends more time idling.

04-03-2017, 01:01 PM	#2
GallopinGhost Member Join Date: Jun 2010 Location: VA Posts: 230 Likes: 23 Liked 21 Times in 13 Posts	Re: Holley question My problem with the LM-2 was with rpm. It would not display, record, or playback anything over 2K rpm. I tried multiple work arounds as per their tech support. After a year of playing around with it, I accepted the fact it didn't work as advertised. AFR displays ok. __________________ Brian Carpenter Stock 1358

04-03-2017, 01:06 PM	#3
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	Re: Holley question The amount of jet change needed when blocking off the power valve is determined by the PVCR (power valve channel restriction) - the 2 little holes under the power valve in the metering body. That can be as high as 10. But I never used the formula. As for using the vacuum reading "at idle, in gear", it's just a reference to make sure that the power valve you start with isn't opening at idle, in gear. If the reading is 7" of vacuum, you'll need a power valve below that to avoid a constant over-rich condition - i.e.: 6.5, 5.5, etc.). It's simply an on/off switch. But as mentioned, it's often eliminated in a race application with success. It's more important in a street application that spends more time idling. __________________ LOCOMOTION Racing