Sealevel load vs RPM scaling for with boost, best practice

TT331FB · Post by **TT331FB** » Wed Apr 27, 2005 11:20 pm

Hi Tuners,

Whats the concenses on adjusting the scaling to make the max load equal 100% load x. In other words, If I am seeing load values of 160%, should I scale them down to 100% load X?

SHaFT7 · Post by **SHaFT7** » Wed Apr 27, 2005 11:38 pm

I just did a 3rd gear pull and then popped it into eec analyzer.....put my loads right where they need to be :D

TT331FB · Post by **TT331FB** » Thu Apr 28, 2005 8:59 am

Thanks.

Please clarify if you ended up with loadx(%) no greater than 100%, even under boost.

pthornton · Post by **pthornton** » Thu Apr 28, 2005 9:05 am

Really depends on what you want to do. My supercharged car is seeing loads in the 150-160 range. It doesn't really matter though as I want the exact same timing and AFR from 100% load and above so why change the load scaling? If you want to control how much timing comes in at 120% vs 100%, then rescale. Yes, you can easily scale so that you see 100% load as the peak loadx. EEC Analyzer makes it easy to visualize the changes on a graph.

TT331FB · Post by **TT331FB** » Thu Apr 28, 2005 10:14 am

Then do I understand correctly that you have not rescaled the load at all? What is your OL switch point?

My WB shows that I am still in closed loop when I start making boost leading to some "ping". My OL switch point is 75% loadx or 3VDC TPS signal. I make boost by 2800 RPM.

Dale McPeters · Post by **Dale McPeters** » Thu Apr 28, 2005 11:47 am

TT331FB wrote:Then do I understand correctly that you have not rescaled the load at all? What is your OL switch point?

My WB shows that I am still in closed loop when I start making boost leading to some "ping". My OL switch point is 75% loadx or 3VDC TPS signal. I make boost by 2800 RPM.

Randy, Has rescaled his load. I have the OL_Throttle_BP set to 2 & the WOT TPS Breakpoint voltage set at 2.5 under the scalar tab on my '93 A9L/GUFB car.... I have also adjusted the sea level load scaling.

One thing that you may consider looking at is the Min Load For Open & Closed Loop Fuel Control under the Scalars tab............These can be changed to make it look at the open loop fuel tables sooner.

Off Topic - What is the model number of the Yokogawa Display that you are using? I have looked on their website but do not see anything that looks like what you have mounted in the car......

TT331FB · Post by **TT331FB** » Thu Apr 28, 2005 12:17 pm

Dale McPeters wrote:
TT331FB wrote:
One thing that you may consider looking at is the Min Load For Open & Closed Loop Fuel Control under the Scalars tab............These can be changed to make it look at the open loop fuel tables sooner.

Off Topic - What is the model number of the Yokogawa Display that you are using? I have looked on their website but do not see anything that looks like what you have mounted in the car......

The data logger is a DX100, customized to run on 12VDC. This is a trick part but way to exspensive to buy. It would be close to $3k if you bought it. Turns out the product manager is a Mustang dude and he was happy to supply me with a out of date unit. It works great for what I need but the "Bling" factor is what catches the eye. "no, it's not a DVD screen, its a data logger" LOL

Dale McPeters · Post by **Dale McPeters** » Thu Apr 28, 2005 12:54 pm

TT331FB wrote:The data logger is a DX100, customized to run on 12VDC. This is a trick part but way to exspensive to buy. It would be close to $3k if you bought it. Turns out the product manager is a Mustang dude and he was happy to supply me with a out of date unit. It works great for what I need but the "Bling" factor is what catches the eye. "no, it's not a DVD screen, its a data logger" LOL

I found the part number for it after reading your write up on your website. The reason that I asked about it is a friend of mine had offered me a used one a while back but I am not sure what the model number was on it. Now I have something to compare it with.... :D Yep the bling factor is very nice on that one, also a very nice car by the way. Maybe my '65 coupe will grow up to be that nice one of these days....

Sealevel load vs RPM scaling for with boost, best practice

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