Edelbrock E-force Owner's thread and FAQs (Frequently Asked Questions) - Page 181 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

CSG Mike · 10-03-2017, 03:46 PM

25F over ambient is totally reasonable, considering how much denser the air is post-supercharger.

The Harrop kit reads similarly, with temps dropping at speed due to the heat exchanger getting more airflow.

If you guys datalog, you'll notice that IATs go *down* when you're part throttle vs idling, again, just because of airflow through the manifold.

A great example of this is your hood. Go for a drive on the highway, and then immediately get out and touch the top of your stock hood. Now, the next time you sit in stop and go traffic, when you park, touch the top of your hood. Note how much hotter it is when the hood has minimal airflow over it versus constant airflow.

B T · 10-03-2017, 03:58 PM

So where is the IAT measured for the ECU? I thought it was read at the MAF, before the supercharger.

StraightOuttaCanadaEh · 10-03-2017, 04:10 PM

Quote:

Originally Posted by CSG Mike

25F over ambient is totally reasonable, considering how much denser the air is post-supercharger.

The Harrop kit reads similarly, with temps dropping at speed due to the heat exchanger getting more airflow.

If you guys datalog, you'll notice that IATs go *down* when you're part throttle vs idling, again, just because of airflow through the manifold.

A great example of this is your hood. Go for a drive on the highway, and then immediately get out and touch the top of your stock hood. Now, the next time you sit in stop and go traffic, when you park, touch the top of your hood. Note how much hotter it is when the hood has minimal airflow over it versus constant airflow.

So would a larger throttle body lower the temps even more by letting through more air?

CSG Mike · 10-03-2017, 04:46 PM

Quote:

Originally Posted by StraightOuttaCanadaEh

So would a larger throttle body lower the temps even more by letting through more air?

Negative; airflow is primarily determined by your SC, and how much you step on the throttle.

You might gain a marginal amount of power and a marginal drop in temps, but both will be in diminishing returns territory.

CSG Mike · 10-03-2017, 04:48 PM

Quote:

Originally Posted by B T

So where is the IAT measured for the ECU? I thought it was read at the MAF, before the supercharger.

For stock cars, yes. The Edelbrock uses a TMAP (temperatuer MAP) in the rear driver side runner.

This is why you have a harness that the stock MAP plugs into, which then plug into the factory MAP plug. The Temperature reading is sent from the TMAP included with the kit, to the MAP's temperature wire. The MAP's actual temperature is ignored, because we only care what the temp of the air going into the engine is, not what the temp of the air is before being charged. This allows for zero cutting, zero splicing, and allows for the ECU to accurately read what your actual intake charge temperature is.

B T · 10-03-2017, 05:02 PM

Great, thanks for the clarification! Have you guys experimented with air ducting and spacing the liquid to air intercooler off of the radiator? I was thinking about going this route, but if someone has tried it and gotten negligible results, I'd rather not attempt.

CSG Mike · 10-03-2017, 05:26 PM

Quote:

Originally Posted by B T

Great, thanks for the clarification! Have you guys experimented with air ducting and spacing the liquid to air intercooler off of the radiator? I was thinking about going this route, but if someone has tried it and gotten negligible results, I'd rather not attempt.

No need for extreme measures, unless you're running a 2.875" pulley or smaller, based on the limited data I have. Even then, it's only really needed for sustained use. Water cooling is really, really efficient, similar to computer cooling.

Bfranklyn86 · 10-04-2017, 04:26 AM

Quote:

Originally Posted by CSG Mike

25F over ambient is totally reasonable, considering how much denser the air is post-supercharger.

The Harrop kit reads similarly, with temps dropping at speed due to the heat exchanger getting more airflow.

If you guys datalog, you'll notice that IATs go *down* when you're part throttle vs idling, again, just because of airflow through the manifold.

A great example of this is your hood. Go for a drive on the highway, and then immediately get out and touch the top of your stock hood. Now, the next time you sit in stop and go traffic, when you park, touch the top of your hood. Note how much hotter it is when the hood has minimal airflow over it versus constant airflow.

Can confirm that this is roughly what I see on the Harrop. The only way to make IATs go up is to sit around in traffic. Extended track sessions....the IATs don't budge.

azynneo · 10-14-2017, 08:46 AM

Is it normal for a car to feel more preppy and smooth with the stock header over a uel?

CSG Mike · 10-14-2017, 12:15 PM

Quote:

Originally Posted by azynneo

Is it normal for a car to feel more preppy and smooth with the stock header over a uel?

Yes, with an aftermarket tune, but you can't eliminate the dip without a header that eliminates it. Ace headers are EL and completely eliminate it.

You can imagine what it would do with an Edelbrock, right?

Dan37BRZ · 10-14-2017, 01:37 PM

Quick question for owners running the D-Box.

Is the green light supposed to be solid or does it rapidly blink? I recently got around to installing the D-Box I ordered a while back and having driveability issues right after.

Car surges, hesitates after each gear change and part throttle acceleration is quite terrible. Not smooth, feels like there are rough spots all over the powerband.

NO CEL, installation was checked and double checked, everything plugged in correctly. Connections are pretty idiot proof.

I'm running the Delicious tune and fine tuned by Zach from Delicious.

As soon as I took off the D-Box the car went back to normal.

azynneo · 10-14-2017, 06:11 PM

Quote:

Originally Posted by CSG Mike

Yes, with an aftermarket tune, but you can't eliminate the dip without a header that eliminates it. Ace headers are EL and completely eliminate it.

You can imagine what it would do with an Edelbrock, right?

I was talking about with the edelbrock and e85. Car feels smoother with the stock header than my uel.

gtengr · 10-14-2017, 06:43 PM

Quote:

Originally Posted by Dan37BRZ

Quick question for owners running the D-Box.

Is the green light supposed to be solid or does it rapidly blink? I recently got around to installing the D-Box I ordered a while back and having driveability issues right after.

Car surges, hesitates after each gear change and part throttle acceleration is quite terrible. Not smooth, feels like there are rough spots all over the powerband.

NO CEL, installation was checked and double checked, everything plugged in correctly. Connections are pretty idiot proof.

I'm running the Delicious tune and fine tuned by Zach from Delicious.

As soon as I took off the D-Box the car went back to normal.

Not running dbox yet but I think the tune has to be matched up.to its function.

Colin86 · 10-14-2017, 06:49 PM

Dbox and Delicious tuned here -car runs nice and smooth.

Unfortunately I think my bypass went bad... Going to check it tomorrow, huge thanks to @BirdTRD for the guide.

I feel like we should link that guide on the first page of this thread... It's post 2368, CSG Mike?

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10-03-2017, 03:46 PM	#2521
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,530 Thanks: 8,918 Thanked 14,175 Times in 6,834 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	25F over ambient is totally reasonable, considering how much denser the air is post-supercharger. The Harrop kit reads similarly, with temps dropping at speed due to the heat exchanger getting more airflow. If you guys datalog, you'll notice that IATs go down when you're part throttle vs idling, again, just because of airflow through the manifold. A great example of this is your hood. Go for a drive on the highway, and then immediately get out and touch the top of your stock hood. Now, the next time you sit in stop and go traffic, when you park, touch the top of your hood. Note how much hotter it is when the hood has minimal airflow over it versus constant airflow.

10-03-2017, 03:58 PM	#2522
B T Senior Member Join Date: May 2015 Drives: 15 BRZ, 2003 MR2, '70 Elky, 06 TBSS Location: Mobile, Alabama Posts: 510 Thanks: 194 Thanked 200 Times in 142 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	So where is the IAT measured for the ECU? I thought it was read at the MAF, before the supercharger.

10-03-2017, 05:02 PM	#2526
B T Senior Member Join Date: May 2015 Drives: 15 BRZ, 2003 MR2, '70 Elky, 06 TBSS Location: Mobile, Alabama Posts: 510 Thanks: 194 Thanked 200 Times in 142 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Great, thanks for the clarification! Have you guys experimented with air ducting and spacing the liquid to air intercooler off of the radiator? I was thinking about going this route, but if someone has tried it and gotten negligible results, I'd rather not attempt.

10-14-2017, 08:46 AM	#2529
azynneo Senior Member Join Date: Jan 2014 Drives: FR-S Location: Cali Posts: 582 Thanks: 50 Thanked 44 Times in 34 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Is it normal for a car to feel more preppy and smooth with the stock header over a uel?

10-14-2017, 01:37 PM	#2531
Dan37BRZ Senior Citizen Join Date: Jan 2017 Drives: 2015 WRB BRZ Location: Oxnard, CA Posts: 267 Thanks: 43 Thanked 184 Times in 82 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Quick question for owners running the D-Box. Is the green light supposed to be solid or does it rapidly blink? I recently got around to installing the D-Box I ordered a while back and having driveability issues right after. Car surges, hesitates after each gear change and part throttle acceleration is quite terrible. Not smooth, feels like there are rough spots all over the powerband. NO CEL, installation was checked and double checked, everything plugged in correctly. Connections are pretty idiot proof. I'm running the Delicious tune and fine tuned by Zach from Delicious. As soon as I took off the D-Box the car went back to normal.

10-14-2017, 06:49 PM	#2534
Colin86 Senior Member Join Date: Jun 2016 Drives: 86 Location: OH Posts: 125 Thanks: 18 Thanked 53 Times in 33 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Dbox and Delicious tuned here -car runs nice and smooth. Unfortunately I think my bypass went bad... Going to check it tomorrow, huge thanks to @BirdTRD for the guide. I feel like we should link that guide on the first page of this thread... It's post 2368, CSG Mike?

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