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Search: Posts Made By: lemming104
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Yesterday, 09:53 AM
Replies: 671
Views: 111,661
Posted By lemming104

20 psi and 17* of advance? What are you running...

20 psi and 17* of advance? What are you running for fuel? E85?
07-18-2019, 01:57 PM
Replies: 18
Views: 762
Posted By lemming104

They're also lacking built-in curves for some of...

They're also lacking built-in curves for some of the most common GM MAP sensors. They just have data for the onboard one, the GM "2.5 bar", and a bunch of Holley-branded sensors.

The overall...
07-18-2019, 09:31 AM
Replies: 18
Views: 762
Posted By lemming104

I think the reason they do that with the wizard...

I think the reason they do that with the wizard is that, if you are NA, they expect you to use the MAP sensor built into the ECU itself. The presence of that sensor is supposed to be one of the...
07-17-2019, 02:24 PM
Replies: 18
Views: 762
Posted By lemming104

I wouldn't trust that data to be correct. Unless...

I wouldn't trust that data to be correct. Unless they are alternate PNs for the same injector design, you do not have any guarantee that two different injector types have the same offset, even if...
07-11-2019, 11:44 AM
Replies: 408
Views: 68,060
Posted By lemming104

Interesting. Might be worth browsing through the...

Interesting. Might be worth browsing through the Spal parts catalog to see whether there is anything I like. Would be nice to free up a general purpose output in case I want to switch to...
07-11-2019, 11:30 AM
Replies: 408
Views: 68,060
Posted By lemming104

You've repeatedly mentioned that the C7 Corvette...

You've repeatedly mentioned that the C7 Corvette fan is an appealing option for those of us who have switched to some flavor of aftermarket ECU, because it flows a lot of air for a single fan and is...
07-11-2019, 09:18 AM
Replies: 20
Views: 1,332
Posted By lemming104

Depending on what he is using for a fuel...

Depending on what he is using for a fuel tank/pump assembly on that car, maintaining a complete EVAP system may not be practical.

There's little reason not to keep a PCV system, unless this is a...
07-08-2019, 09:38 AM
Replies: 408
Views: 68,060
Posted By lemming104

That's a good point about axis rescaling,...

That's a good point about axis rescaling, especially since I don't believe that there is any similar functionality in HPTuners--if you pick an OS that is set up for a two or three-bar MAP, you're...
06-26-2019, 10:02 AM
Replies: 408
Views: 68,060
Posted By lemming104

FYI, pretty much all of the pressure and...

FYI, pretty much all of the pressure and temperature sensors can be customized. For example, you can also use pretty much whatever MAP sensor you want, so long as it produces a 0-5V output. It is...
06-24-2019, 04:20 PM
Replies: 408
Views: 68,060
Posted By lemming104

I assume that was for the unit itself without...

I assume that was for the unit itself without wiring harnesses and whatnot? The full Dominator-based MPFI kits are all >$3K now. :(
06-24-2019, 10:37 AM
Replies: 408
Views: 68,060
Posted By lemming104

One thing I wish they'd added, just as a...

One thing I wish they'd added, just as a "convenience" feature, is boost control via fixed duty cycle. You can do this manually by just not using the Boost ICF and setting up a custom PWM output. ...
06-20-2019, 09:43 AM
Replies: 20
Views: 1,434
Posted By lemming104

The MAF is going to be the primary input for...

The MAF is going to be the primary input for fueling and the O2 sensors are just there to help the ECU make corrections. If the MAF transfer function is incorrect, then that is going to make a big...
06-20-2019, 09:18 AM
Replies: 408
Views: 68,060
Posted By lemming104

Correct. It doesn't follow the -40 to 999 scale...

Correct. It doesn't follow the -40 to 999 scale either. In the screenshots I posted, both ECUs actually use the same temperature scale even though the axis on the bottom of the graph might lead you...
06-19-2019, 10:33 AM
Replies: 671
Views: 111,661
Posted By lemming104

Could be different types of dynos. With a pure...

Could be different types of dynos. With a pure inertial dyno, like a Dynojet with no optional equipment added, you're just measuring the angular acceleration of the drum. Higher horsepower cars will...
06-19-2019, 09:48 AM
Replies: 408
Views: 68,060
Posted By lemming104

You are interpreting my post incorrectly. I'm...

You are interpreting my post incorrectly. I'm pointing out an actual bug.

Here is a screenshot from HEFI v5, which is what Dominator/HP users would see. Note that the axis at the bottom is not...
06-18-2019, 11:51 AM
Replies: 408
Views: 68,060
Posted By lemming104

The VE self-learning is a pretty nice feature. ...

The VE self-learning is a pretty nice feature. Getting a speed-density VE table dialed in without that kind of function is still possible, and it's not particularly hard, but it is very tedious and...
06-18-2019, 10:09 AM
Replies: 408
Views: 68,060
Posted By lemming104

I think it depends on what kind of setup you are...

I think it depends on what kind of setup you are building and what you need/want. I think it is an easier overall tuning experience than a stock ECU reflash system like HPTuners, and it's nice to...
06-18-2019, 09:58 AM
Replies: 408
Views: 68,060
Posted By lemming104

For the record, the Holley harnesses are modular,...

For the record, the Holley harnesses are modular, so you can mix and match to an extent. Terminator X and X MAX ECUs use a subset of the harnesses that the HP and Dominator do.

The main harness...
06-18-2019, 09:32 AM
Replies: 408
Views: 68,060
Posted By lemming104

The settings start zeroed, yes. It absolutely...

The settings start zeroed, yes. It absolutely has an effect if you start adjusting them and they don't do what you expect. Obvious workaround is to just copy the scales from the Sensor Scaling...
06-17-2019, 10:02 AM
Replies: 408
Views: 68,060
Posted By lemming104

FYI, for those of you using this system, I found...

FYI, for those of you using this system, I found an annoying bug/oversight in the PC software. This resulted in me chasing my tail for a couple of hours, trying to figure out why I was running 9* of...
06-10-2019, 10:34 AM
Replies: 17
Views: 1,877
Posted By lemming104

A few more updates on this, since I just can't...

A few more updates on this, since I just can't stop finding new things to mess with.

I replaced the Turbonetics 7875 I was using with a Precision 7675 CEA Gen 2. Similar size, but the PTE unit...
06-06-2019, 11:41 AM
Replies: 408
Views: 68,060
Posted By lemming104

I agree, to an extent, regarding complexity. The...

I agree, to an extent, regarding complexity. The Holley stuff has the fuel and spark modifiers that any reasonable person who isn't trying to thread the needle through EPA regs would actually need,...
06-05-2019, 11:18 AM
Replies: 671
Views: 111,661
Posted By lemming104

If you've got something reasonably functional for...

If you've got something reasonably functional for boost control and an adequate fuel system, the car is tuned in speed density mode, and the previous tuner wasn't an idiot, this only involves editing...
06-05-2019, 11:02 AM
Replies: 671
Views: 111,661
Posted By lemming104

That's a rather open ended question. You'll need...

That's a rather open ended question. You'll need all of the normal sensors and actuators you'd usually use to run an LS engine with a factory wiring harness, except for the factory oxygen sensors....
06-04-2019, 04:09 PM
Replies: 671
Views: 111,661
Posted By lemming104

The X kits come with: 1. The same type of...

The X kits come with:
1. The same type of wiring harness Holley sells for their other ECUs. It has an 8-pin connector with four user-defined input pins and four user-defined output pins, and a 4-pin...
Showing results 1 to 25 of 152
 


 
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