Edelbrock E-force Owner's thread and FAQs (Frequently Asked Questions)

[Sajakh]

I am looking to install the edelbrock supercharger. I already have a open flash header and oft.

I don't have any tuners where I live. Since I have the uel header, How can I get my car tuned by either oft or ecutek thru the process of etuning?

[CSG David]

Originally Posted by Sajakh

I am looking to install the edelbrock supercharger. I already have a open flash header and oft.

I don't have any tuners where I live. Since I have the uel header, How can I get my car tuned by either oft or ecutek thru the process of etuning?

You may want to sell your OFT unit and we can help you out with the Edelbrock + EcuTek units. Let us know and we can set you up with everything, including the appropriate tune for your specific setup.

[illmatic]

Originally Posted by CSG Mike

I'm waiting for someone to do a Dual Radium setup with this kit....

Tell you what, first person to volunteer, we'll make a special deal on it.

I'm local and would be interested if you need a DD tester. PM details.


Sent from my XT1575 using Tapatalk

[Firesnake]

Summary
The Edelbrock CARB Tune mirrors OEM characteristics while delivering speed at a much faster rate. While this may feel underwhelming in a straight line, the Edelbrocks linearity facilitates faster corner exits and confident throttle modulation. The oem throttle response, to me, was the dullest part of the 86. Now the throttle is to my foot as the steering feel is to my hands and arms. If the 86 is the drivers car, then I might consider the Edelbrock to be the drivers boost.


2013 Scion FR-S info
RS-R Sports-I with damaged driver side damper adjustment knob
Zeta Catback
RT700 Brake fluid, Spiegler SS Lines, Winmax W2 brake pads
Stock wheels with worn MPSS

Driver info
Car Noob
Novice auto-crosser (I only attend practice days, no championships)
Professional Security Driver

Full Review
I first played with the supercharger in a straight line and was a bit underwhelmed by the experience. The car didn’t feel as fast as I thought it would, but the car absolutely accelerated at a much faster rate than what I could feel. It was very easy to get into triple digits in a short amount of time. The consistency in power and torque delivery wasn’t felt much but was made more apparent when I looked at my speed. It seemed like I needed just a little bit more, and I began to budget for a Flex Fuel Kit with injectors and pump.

On December 12, 2015 I participated in the San Diego BMW CCA Ultimate Auto-Cross event.

The car absolutely came alive! I anticipated lots of wheel spin, but it was surprisingly easy to prevent it. When I was NA both oem and OFT e85, I felt like I had to depress the throttle 70-100% to try and regain scrubbed speed in a short amount of time. The edelbrocks improved throttle response and acceleration makes it much easier to progress the throttle depression. The proprioceptive throttle feedback and engine response played synergistically with steering feel, and brake feel provided by RT700 fluid and Winmax pads. It was easier for me to communicate with the car as a whole, and I feel like I have to just get used to the increased momentum and smaller windows of recognition.

If I did my job right, then the brakes were my limiter as I carried too much speed on corner entry resulting in understeer. Rather than accelerate less or braking earlier, I wanted to brake harder on corner approach but still had too much momentum to rotate the car well. What was awesome was how predictable it was to play the throttle to induce enough oversteer to compensate the understeer and point the car where I originally intended.

I had a propensity to oversteer at the “S” curve, which I blame driver error for. I tried to stay at 20-30 % throttle. It was a right turn followed by an immediate left…but the car kept sliding to the right. Not sure if I lifted habitually, drove too fast, or just secretly wanted some Scandinavian flick in my life. In any case, it was most likely my lack of skill and recognition.


Granted, I could get tires with higher grip. But, I don’t think I’m driving with enough precision to hit the ceiling of MPSS grip capacity. I think having modest tires keeps me honest in my recognition, angles, and input timing. My problem is that I tend to fixate on negotiating the corner in front of me, when I should be setting up car position for the corner that follows.

I credit the understeer to brake pads, and accidental oversteer to driver error. I don’t recall any point where I felt like throttle was unpredictably causing wheelspin and oversteer. But I DO recall thinking “too much throttle and angle”.

Where I am Now
I’m VERY happy with the Edelbrock. It stays very true to 86 dynamics and feels as though it completes its character. It truly does feel like a more powerful NA engine with a refined throttle that you can now finesse. The car has a much more proprioceptive throttle to complete the communicative braking and handling of the car.

Rather than more power, I’m going to spend my time fixing myself, probably my brakes, and possibly my tires.

If you’re a fan of the quarter mile, this may not be the most cost effective route.

If you geeked out on Tada-San’s engineering and love to drive the squiggles and dorifto’s, then fix yourself and get this Kit!

[BigFatFlip]

Great read @Firesnake!

Some choice quotes:

Originally Posted by Firesnake

Driver info
Car Noob
Novice auto-crosser (I only attend practice days, no championships)
Professional Security Driver

The proprioceptive throttle feedback and engine response played synergistically with steering feel...

Rather than more power, I’m going to spend my time fixing myself, probably my brakes, and possibly my tires.

If you’re a fan of the quarter mile, this may not be the most cost effective route.

If you geeked out on Tada-San’s engineering and love to drive the squiggles and dorifto’s, then fix yourself and get this Kit!

Haha, my feeling is very similar. I think people expect a big kick in the pants after they plop down serious cash for this kit, but you have to realize you are also paying for the design, forethought (ease of install), manufacturing (mostly made in house, not pieced together) and CARB cert. Not saying that its a slouch by any means, but the description of it "feeling like a bigger engine" is very accurate.

[shiumai]

I think we're seeing a pattern here with the e-force owner impressions. not 'neck-snapping fast' but 'fast' and it's pretty much what i envisioned.
i'm on my 2nd tank of gas with the e-force and am enjoying it so far; even on the short daily commute to work. i have noticed a 2mpg decrease - you don't get more acceleration for free. i went from 18.1 mpg to 16.1 for the first tank. my driving characteristics have changed a little of course.

[toast]

I have a hard time seeing how 240 whp in a 2700 pound car doesn't result in a pretty quick straight line acceleration. You have a much better power to rate ratio than an STi. What are people getting for 0-60 times (I realize this is not the best measure but it is a very common yardstick).

Sent from my Nexus 6 using Tapatalk

[BigFatFlip]

Originally Posted by shiumai

I think we're seeing a pattern here with the e-force owner impressions. not 'neck-snapping fast' but 'fast' and it's pretty much what i envisioned.
i'm on my 2nd tank of gas with the e-force and am enjoying it so far; even on the short daily commute to work. i have noticed a 2mpg decrease - you don't get more acceleration for free. i went from 18.1 mpg to 16.1 for the first tank. my driving characteristics have changed a little of course.

Just curious, how long is your daily commute? I have a short commute to work (about 6.5 mi city) and noticed it go from 25 to 22 mpg, so about a similar drop. I did notice that freeway mpg was almost the same, going down to 0.5 mpg, but that can be measurement error.

Also, piggy backing on my "larger engine" observation, I've noticed that over the last couple of weeks, I have naturally started shifting earlier at ~3k rpm (used to be ~4k, I never grew out of the engine break-in period since new). I guess the slightly increased low end torque has me fooled? I know that short shifting can be bad for the engine, but it doesn't feel like I'm lugging it at all.

[shiumai]

Originally Posted by BigFatFlip

Just curious, how long is your daily commute? I have a short commute to work (about 6.5 mi city) and noticed it go from 25 to 22 mpg, so about a similar drop. I did notice that freeway mpg was almost the same, going down to 0.5 mpg, but that can be measurement error.

Also, piggy backing on my "larger engine" observation, I've noticed that over the last couple of weeks, I have naturally started shifting earlier at ~3k rpm (used to be ~4k, I never grew out of the engine break-in period since new). I guess the slightly increased low end torque has me fooled? I know that short shifting can be bad for the engine, but it doesn't feel like I'm lugging it at all.

4 miles each way - all street . Stop 'n' go traffic on the way home. when did you get it installed?
Barely gets warmed up by the time i get to work, so i have to take the 'long way home' to open it up sometimes, LOL. my shift points are still the same (paddle shifters on manual); i'm just getting there quicker. the main difference i find is that i'm using less throttle than before to get up to the same speed.

[FRS Justin]

Originally Posted by toast

I have a hard time seeing how 240 whp in a 2700 pound car doesn't result in a pretty quick straight line acceleration. You have a much better power to rate ratio than an STi. What are people getting for 0-60 times (I realize this is not the best measure but it is a very common yardstick).

Sent from my Nexus 6 using Tapatalk

This is what it should do using weight vs hp calculation 240 hp shifting 5 times in a 1/4 with a 225-45-17 tire and a 4.10 gear


2700lbs including driver and gas sitting on the line



Power to Weight Ratio: 11.25 60 Foot E.T. : 1.81 1/8 Mile E.T. : 8.24 1/8 Mile Trap Speed : 82.54 1/4 Mile E.T. : 13.05 1/4 Mile Trap Speed : 103 1/4 Mile Trap RPM :5,573


2850 weight


Power to Weight Ratio: 11.88 60 Foot E.T. : 1.85 1/8 Mile E.T. : 8.38 1/8 Mile Trap Speed : 81.07 1/4 Mile E.T. : 13.29 1/4 Mile Trap Speed : 101 1/4 Mile Trap RPM : 5,473





I find subtracting 2/10ths off of 1/4 is more realistic to compensate for shifting and 60ft loss




13.25@2700lbs and 13.49@2850 isn't bad at all for carb legal tune and 91 oct fuel

0 to 60 times using same formula based on 1/8 mile speed and time should be
4.59 @2850
4.35@2700
More realistic add 1/10

[CSG Mike]

Originally Posted by toast

I have a hard time seeing how 240 whp in a 2700 pound car doesn't result in a pretty quick straight line acceleration. You have a much better power to rate ratio than an STi. What are people getting for 0-60 times (I realize this is not the best measure but it is a very common yardstick).

Sent from my Nexus 6 using Tapatalk

It's not that it's not quick, but more that you don't really feel it because the delivery is so smooth.

It's the exact opposite of a STi, where you have very little torque, and then a huge swell as the turbo spools up.

[FRS Justin]

Originally Posted by CSG Mike

It's not that it's not quick, but more that you don't really feel it because the delivery is so smooth.

It's the exact opposite of a STi, where you have very little torque, and then a huge swell as the turbo spools up.

your exactly right it's deceptively quick.


If anyone drove a late 80s 5.0 then jumped to the 4.6 modular it's the same exact thing we had customers complaining big time its not as fast as the old 5.0 but it was actually proven to be faster. That just shows the engineering put into this unit. Nice job Edelbrock

[shiumai]

Originally Posted by CSG Mike

It's the exact opposite of a STi, where you have very little torque, and then a huge swell as the turbo spools up.

It may not have the surge of a turbo, but i do get a huge swell when i floor the gas pedal now

[FRS Justin]

Toast used the edelbrock 91 carb tune rated @ 240hp


Lets try the Delicious Tuning map rated @ 263hp
same scenario


Power to Weight Ratio: 10.27 60 Foot E.T. : 1.76 1/8 Mile E.T. : 7.99 1/8 Mile Trap Speed : 85.10 1/4 Mile E.T. : 12.66 1/4 Mile Trap Speed : 106 1/4 Mile Trap RPM : 5,745





Power to Weight Ratio: 10.84 60 Foot E.T. : 1.79 1/8 Mile E.T. : 8.13 1/8 Mile Trap Speed : 83.58 1/4 Mile E.T. : 12.89 1/4 Mile Trap Speed : 104 1/4 Mile Trap RPM : 5,643