Completed installation of Edelbrocks 1593 E-Force and loaded Edelbrocks Tune April 1st. I want to thank Motorhead-47 for his help with questions and providing technical support. I followed Ken's many threads and posts covering his installation and received great benefit from his experiences and suggestions.

I am not a mechanic but a retired engineer with time on my hands. I have always enjoyed doing things for myself and adding the E-Force as a DIY project was a no brainer. After researching our Forum for tips, following Edelbrocks Installation Instructions, and with Ken in my back pocket, the install went very well, no real surprises.

My biggest issue to date has been with Edelbrocks Tune. Their tune is scaled to accommodate injectors which are larger than the parameter range allowed by the 06 Vette's PCM/VCM. Because the tune is scaled, I had issues at start-up with the motor racing and poor throttle response. Also, my STFT's/LTFT's were >30% at idle. I have fixed both of these issues ("Tuning The Right Way" - The Tuning School Home Study).

I have only put 44 data logged miles on the E-Force. Once I fixed my issues with start-up, STFT/LTFT at idle and off throttle, the Vette sounds great. I have not performed any sustained WOT pulls yet but the motor sounds very smooth and exhibits very good power. Once I have an opportunity to calibrate the MAF across the RPM range and I'm happy and confident in the way the LS2 E-Force is running, I will take it to the track for Test and Tune to see what this modification/addition offers in the way of improved performance in the quarter mile.

At idle the head unit makes a noise that sounds like the rotors are clanking together. I was told by Edelbrock that this noise is normal and that over time this noise will go away. There is a coating on the Rotors which must wear in before the head unit will quiet down. Regardless, I was told not to worry about this noise, that it was normal.

I will update this thread from time to time as I learn more about this new modification. I can almost assure you that I will be going with a smaller pully, upgraded fuel system and injectors. However, I want to get this existing package working like a finely tuned watch before I take the next step.

 

Very clean install

Mine is sometimes a little noisy and sometimes quiet at idle, but not nearly as loud as it was when I first installed it. Hopefully yours will quiet down pretty quick.

I see you used the lower the cradle approach rather than remove the rack to pin the crank. I wish I had done that. It would have saved a lot of effort and considerable bad language.

I made that post on your HPT forum thread about the injectors - BLKLS3

I know you will enjoy driving it. I have noticed I need to be a little conservative on if I don't want all the gas in my tank to mysteriously vanish.

 

great job-awesome photos.

You're gonna luv it!!!!!!

 

How long did it take you two to do your installs?

 

I had my Vette in the air, on Jack Stands, for better than two weeks but I would guess at around 40 hours of work. I wasn't in a hurry, trying to take my time and enjoy the process, which I did. I'm sure there are Forum Members who could do this work in 16 or fewer hours. If you have everything on hand, this job should run very smooth. I am an hour (round trip) from the nearest dependable parts/tool store. I would from time to time stop my install to run for a tool I couldn't find. I dropped a 10mm 1/4" socket which never hit the floor and which I could not find. I spent two hours looking for it, taking fenders apart, etc. but just gave up and bought two new ones. The E-Force could very well be the cleanest and easiest of the SC Systems to install. This is another reason I chose the E-Force, very well engineered for the DIY guy.

 

Joe,

Looks great...a very clean install! Looks somewhat familiar

One alibi for the Edelbrock tune...and I am only mentioning this because there are those on this forum who would like to poke at anything they can find. It is important to point out that your car has several mods to include headers, a ported throttle body and a set of 1.8 ratio rockers. It's a pretty good deviation from OEM stock which the Edelbrock calibration was developed for.

 

Ken,
You are correct. My modifications (Kooks Long Tubes - High Flow Cats - Corsa Sport Exhaust - VMAX Ported TB - Crane 1.8 Quick Lift Roller Rockers) resulted in my need to tweek Edelbrocks tune. If I had been stock, I'm positive this whole process would have been plug and play. The changes I have made to Edelbrocks Tune are very minor. Even without my modifications, I would have been looking at and adjusting Edelbrocks tune to insure all sensors and parameters are calibrated to my LS2. I am by no means an accomplished calibrator but find working with the tune a lot of fun. I invested in HP Tuners and The Tuning School which probably qualifies me as dangerous. However, it is a lot of fun to be able to Scan and Log the performance of the engine. Ken, thanks again for your continued help and support.

 

Congrats on an excellent install.... ECS installed mine last year and I've been enjoying ever since! Thanks for the write up.....

BTW.. Ken is a class act and knows more about the E-Force than anyone I've talked with...

 

 

I did the crank pinning and cam swap one weekend and the blower install on another.

 

Yup, Ken is a great source of information and is always willing to help

 

ECS installed mine. They started Monday morning and the car was finished with a custom tune Tuesday afternoon. I'd say the physical install took Mike about 12 hours after which Doug tuned it....... Keep in mind these people have installed hundreds if not thousands of SC's so there wasn't much of a learning curve...

 

 

wallyj raised an interesting point concerning Edelbrocks Tune. Edelbrock scales their tune to accommodate VCM/ECU parameter limitations for Fuel Injector size. This built in limitation is approximately 67.5 lb/hr and cannot be changed. The injectors offered with the 1593 Kit are 52 lb/hr. The obvious question here is if the injectors are smaller than the built in parameter limitation, why the scaled tune? I will make an attempt to find an answer to this question. While my LS2 seems to be running just fine with the scaled tune, I would prefer to have all info offered by the DIC to be as accurate as possible which is not the case when working with a scaled tune.

 

The calibration is scaled because of the airflow limit, not the injector size limit. If you want your DIC correct you can always unscale it and rape the PE table when you hit the airflow limit, quite a few tuners still do it this way...

 

Thank you yonson. I will stick with the scaled tune. I was under the impression it was an injector size limitation and had nothing to do with Airflow. Thanks for clearing this up. I have left messages with Chris Johnson of Edelbrock asking for a clearification on this issue. He is a very busy guy and has not yet returned my call. It appears you have answered this question for him.

 

Be aware that there are two spacers to be mounted between the subframe and mounting nuts that Edlebrock added to this kit that alleviates the possibility of the head unit touching the firewall/cowl. This is for the LS2 kits only. This was not in the earlier LS2 kits until they found out that the 05 to 07 Vettes have slightly different cowl design which could be in interference with the E-Force head unit. This would cause noise in the cabin due to contact of the head unit against the firewall/cowl.

Look at instruction 92, if it has the spacers described that are needed, then your kit had them included. Mine didn't and a I had a fair amount of noise being transmitted through my dash as a result. The spacers are being sent and once installed should alleviate the problem of noise in the cabin being transmitted from the head unit. Others who have had this kit installed on a LS2 like Cthusker did not have the problem even though they did not install the spacers, apparently luck of the draw.

 

Thanks j digi454. I received the spacers in my kit and they are installed.

 

Glad I was able to have been of some help guys.

I didn't time myself on the first install but with the second it took about 20 hrs working in 3-4 hour stretches. I did have assistance with getting the supercharger hefted into place and with getting the crank bolt out but most of the rest of the job was done solo taking my time.

 

The following is the response I received from Chris Johnson of Edelbrock. I may be the only guy who wasn't getting this but Chris does a nice job of explaining: "While there is a limit on injector size you can use (scaling can fix this issue as well), there is also an airflow limit of 67.5 lb/hr, anything over this and the PCM does not know how much fuel is needed so it continues to supply the same amount as is being requested at 67.5 lb/hr even if you are actually making 80 lb/hr airflow. When you scale the calibration (I used 25% for this one) what was once 67.5 lb/hr, the PCM now thinks is actually 50.625 lb/hr. So now with the 25% scaling we can actually make 90 lb/hr of airflow before we hit our limit. Your DIC is going to be 25% off as well as any airflow monitoring you do with HP tuners. So just remember when looking at the airflow to add 25% to it for the actual airflow being used." Thanks Chris Johnson!