Data logging questions?

[ninerscout]

I have a 1227747 computer. I am using $42-1227747-V4.1.xdf‎ and $42-1227747-V4.1.adx‎. My Injector Duty Cycle %, BPW MS from hack *, and my Spark Advance From hack are in Red. Am I doing anything wrong? my data log and Bin is attached.

Thanks,
Ninerscout

[ninerscout]

So I decided to check my fuel pressure with a Mac Tools gauge and compare it to a gauge I bought from CFM Technologies. The gauge from CFM Technologies was totally different from my Mac Tools gauge. CFM Technologies gauge reads 13 psi and my Mac Tools gauge reads 17 psi. I am guessing this is why my readings are off on Tuner Pro. I bought a Fuel pressure regulator from CFM Technologies and I can not get it to drop bellow 17 psi. So can I run my TBI at 17 psi? Maybe change my BPW? Will I have problems with this high of pressure? I took it out and it runs good. I am getting close one my VE tables. I am running a stock International 345 with stock TBI , 65lb injectors, tri wye headers, fuel and spark control.

Thanks,
Ninerscout

[EagleMark]

So I decided to check my fuel pressure with a Mac Tools gauge and compare it to a gauge I bought from CFM Technologies. The gauge from CFM Technologies was totally different from my Mac Tools gauge. CFM Technologies gauge reads 13 psi and my Mac Tools gauge reads 17 psi. I am guessing this is why my readings are off on Tuner Pro. I bought a Fuel pressure regulator from CFM Technologies and I can not get it to drop bellow 17 psi. So can I run my TBI at 17 psi? Maybe change my BPW? Will I have problems with this high of pressure? I took it out and it runs good. I am getting close one my VE tables. I am running a stock International 345 with stock TBI , 65lb injectors, tri wye headers, fuel and spark control.

Thanks,
Ninerscout

That's a delema with fuel pressure gauges, you don't know what is accurate? Your BLM look good in that last data log so go with whatever pressure that was and do some WOT high RPM to see if you run out of fuel. If you run low on fuel/BLM going lean and can not adjust VE high enough then you need more pressure.

For the IH motor 13 PSI should be fine.

Did the adjustable regulater come with spring? It may not be able to go lower then 17 psi?

Or if you have a restriction in return line it will raise pressure on feed side.

[PJG1173]

So I decided to check my fuel pressure with a Mac Tools gauge and compare it to a gauge I bought from CFM Technologies. The gauge from CFM Technologies was totally different from my Mac Tools gauge. CFM Technologies gauge reads 13 psi and my Mac Tools gauge reads 17 psi. I am guessing this is why my readings are off on Tuner Pro. I bought a Fuel pressure regulator from CFM Technologies and I can not get it to drop bellow 17 psi. So can I run my TBI at 17 psi? Maybe change my BPW? Will I have problems with this high of pressure? I took it out and it runs good. I am getting close one my VE tables. I am running a stock International 345 with stock TBI , 65lb injectors, tri wye headers, fuel and spark control.

Thanks,
Ninerscout

65# injectors @ 17 psi is alot of go go juice. Id get a third opinion from another gauge.

[ninerscout]

The adjustable fuel pressure regulator did not come with a new spring. I reused the original spring in the Throttle body. I will check for a restriction in the return line. I will try another gauge. I have a liquid filled that should be pretty accurate. Thanks a lot guys.

Ninerscout

[EagleMark]

He got his BLM pretty perfect, and with a stock spring your not going to get 17 PSI so I would believe the other gauge that says 13 PSI for now and stay there. Could see if that gauge will go up and down a little from 13 PSI. But I'm leaning to the MAC gauge being wrong at 17 PSI...

[ninerscout]

I know I am dwelling on fuel pressure too much but I know it is the base of the system. something the computer does not see. So I played around with the adjustable regulator, bumped up the pressure too high, and burried my gauge from CFM Tech and ruined it. Costly mistake. I tried three other gauges and received different results. So I put the original regulator in. Still getting 17 psi. with the Mac gauge, which should be the most accurate, and 6 psi with a liquid filled. On the Mac gauge I am using a OTC adapter that goes where the stock Chevy fuel filter is. The liquid filled is right at the inlet of the throttle body. I know the stock regulator is set around 13 psi. but I bumped it up when I had it removed. I twisted it till the Tab was half way. Runs great, so I am going to run it. If I am thinking correctly the pressure being too high it would run really rich and the BLM table would reflect it. Is that correct? Anything else am I missing about running too high of pressure.

Thanks,
Ninerscout

[EagleMark]

In the XDF file under Scalers there are three **Read Me Hack**. You did not apply them to the bin before you did your data log, so those data items will not work.

Those three hacks take the place of Prom ID, Old pa3 and O2 Cross counts in ADX/data output. So what this does is changes the bin to put out more useful information in data stream.

Looked at your BLM and looks like you got the hang of using the spreadsheet, they are looking good!