Hi All,

I've read many threads on the subject but I am now more confused on what I need. I have a new to me 1 year old, 2007 Lemans Blue, Z51 base couple with A6 transmission.

I'm sure the Stage 1, 554hp kit would be plenty for my 3 season daily driver needs. I store the car for the winter as I don't want any road salt getting on it.
I don't want a 1/4 mile drag strip focused setup. But I would like to try a road course in the future. I have never been on a road course so I have to find a track and I have a lot to learn.

So my main question is would there be an advantage to purchasing the Stage 3/Pro Tuner kit or Stage 2 kit?

I am not looking to make max power and start braking driveline parts. I just want a little more power for the street.

I think the Stage 2 kit adds a smaller supercharger pulley for more boost and a higher flow in tank fuel pump to prevent fuel starvation/lean conditions. Are the 52 pound Bosch injectors included in both kits adequate? Someone mentioned that they are the same injectors the the supercharged ZR1 uses. So I guess they're up to the task? I also know the tanks have to be dropped to install the new fuel pump.

As for the Stage 3/Pro Tuner kit, I think it contains everything the Stage 1 kit comes with minus the supercharger pulley, injectors and coil covers? I could care less for the coil covers as I prefer the bare engine look. Much of the information I have read on this forum is older. I was curious if there are any new developments and changes I could benefit from.

I have the COW Booster/Tuner from Corvettes of Westchester and I'm pretty sure he can provide me with a tune. I also have the Hooker Blackheart axle back exhaust. Otherwise my car is stock.

Also there's currently a $500 rebate from Edelbrock till the end of the month. I'd like to take advantage of that. The RDP Store also has a 10% off coupon and have all the kits for my car.

What would you All with hands on experience suggest?

I think I'd rather have someone install the supercharger kit for me. I can do minor repairs but the installation seems too much for me to handle. Who would you recommend as a trustworthy and competent installer?

Thank you,

Taso

 

Well I went ahead and ordered the 1595 Pro Tuner kit from the RDP Store for $4,976.88 last night. I will submit the rebate forms and hopefully get the $500 from Edelbrock too.

I'm thinking of getting the 3.875" pulley and the Edelbrock 15405 Heat Exchanger to use instead of the one that comes in the kit. I will wait on Chuck's recommendations for injectors and mass airflow sensor. I should be able to find the serpentine belt part number in the forums or from Edelbrock.

I am going to try to install the kit myself now that I've watched a bunch of videos. It will be while the car is in storage over the winter so I should be able to finish it in those 4 months. ;-)

Thanks,

Taso

 

Chuck tuned my z06 with an edelbrock supercharger kit, its been perfect since day one. The kit i bought will be slightly different than yours im pretty sure, but i know we didnt need anything more to buy. You may need an upgraded fuel pump like you stated. Good luck with your new toy, i very happy with mine. i know other kits may have more power available but im happy with the power level it makes as is.

 

Thank you for the response Erikszr1! Your car should be plenty fast for the street with the 7 liter displacement and supercharger. I wanted a big block power curve so that's why I went for the E-Force.

The more you read the more stuff you think you have to accomodate in cooling, fuel, etc upgrades.

I am positive Chuck will make me a perfect tune and with his experience he will guide me to the parts that will make my car a reliable and fun finely tuned machine!

Thanks,

Taso

.

 

my personal choice go with a different blower, if you want to know why just contact big performance shops and they'll head you in the right direction.

 

GX427,

Thanks for the suggestion but which supercharger did you have in mind?

I think the E-Force fits my criteria the best and is the best in the bang for buck option for me. I prefer the flatter off idle to redline torque curve that a positive displacement supercharger provides. The Magnuson and Whipple kits for my car both require a new hood for clearance. Plus they are a lot more money than the ~$5150 I will be paying for the Edelbrock Pro Tuner kit and the necessary components not included in the kit.

I have "read" that a stock LS2's internals can only handle up to 650 horsepower. I'd like to stay under that to not have to start replacing broken engine and drivetrain parts.
Like I said previously, I just use the car for a fun daily driver and want a little more reliable power while I "drive it like I stole it".

Thank you,

Taso

 

honestly the a and a kit is the best you'll have heat issues with PD if i chose a PD it would be magnuson. Just give andy a call at a and a trust me.

 

Eforce is a great blower for a bolt on application. Enjoy it.

 

You can upgrade to the 599 kit pretty easily and save a good bit of cash. Just don't buy the upgrade from Edelbrock. You can get the 3.5" pulley from Summit and a Boost-A-Pump to used with your existing fuel pump. Will save you about $700.

Also, not a bad idea to get the Racetronix Fuel Pump harness upgrade. This is an beefier wire harness and relay that will supplement the factory wiring harness so that there is no voltage drop to the fuel pump. This is also made to easily connect to a Boost-A-Pump.

Definitely get a dyno tune. The Edelbrock tune is crap. It is very rich which is safe but will leave a lot of power on the table.

 

Realcanuk, thank you! I am going to enjoy the shirt out of it!

I have been reading yours and many other member's responses for tips to maximize the E-Force supercharger's performance. Thank you for that!

Spaceme1117, I've read so much conflicting information that I am unsure as to what I really need. I can either leave well enough alone and address any issues as they occur or I can take care of issues in advance so I minimize downtime next season.

Since I am a proactive type of guy and I have the luxury of time right now, I have been researching fuel, cooling, exhaust and traction.

The Edelbrock installation manual does not recommend the Boost a pump. Why is that? I was definitely going to do the Racetronix Fuel Pump harness upgrade for the benefits, it's not expensive and I'm sure I can handle the installation. I did a little research on what is involved in dropping the fuel tank to install a Z06 or better fuel pump. It seems the biggest problems are lifting the car high enough and replacing fused plastic fuel lines in the crossover tube? It would be easy peasy if I had a lift in my garage but I don't.

I just had an idea! I could upgrade the fuel pump at my friends service station before I put the car away for the winter! Hmmmm... I have also seen the ECS Aeromotive fuel system upgrade kits that are inline and leave the in tank pump alone. Would that be a viable option? Also, would an E85 conversion be beneficial as a safety measure for detonation? The only thing that bothers me is that the Corvette has a small fuel capacity and because of the lower E85 mpg my range between refills will decrease. The car would be a 3 season daily driver. I do roughly 30 miles a day so maybe there is a balance? Could I have a setup that can switch between E85 and 93 octane, 10% ethanol pump gas automatically?

How concerned do I need to be about cooling? The biggest E-Force gripes are about heat soak and the heat exchanger blocks airflow through the radiator. That is why I was considering getting the Edelbrock 15405 universal heat exchanger. I am not going to be doing hot laps on a road course for hours.

I have read mixed reviews on getting the Dewitts radiators. My current radiator has the transmission cooler connections in it on the passenger side. At least that's what I think they are. Some people recommend running engine and trans oil coolers as stand alone. I get that the Dewitts has more capacity but the thickness restricts airflow?

I was thinking about replacing my stock LS2 exhaust manifolds for Z06 manifolds, downpipes and x-pipe. My thinking is that I will gain maybe 20 horsepower and keep the E-Force on the 3.875 pulley so it's spinning slower and not heating the air as much. And that they are a nice bang for buck upgrade versus $2000 on a long tube header system. Then again, do I need to upgrade the exhaust?

And for traction I like Spinmonster's suggestion of widening stock five spoke front 18" rims to 11" wide to fit inside the rear fenders. I like the sleeper look . I wanted to stick with all season tires but I don't know if that's a viable option now. I don't need snow performance but I do need them to handle rain.

So that's where I am at, at the moment. Since I am a newbie I have lots of questions on what I need to address and what I can let go.

Thank you all for your help!

Taso

 

The A&A and ECS kits both use a Boost-A-Pump and never have any issues. The Edelbrock kit is $1000 for the Z06 pump and 3.5" pulley; a BAP and the 3.5" pulley would total about $300. Actually, you could buy the 3.5" pulley from Summit for $50 and get a Z06 AC-Delco pump from RockAuto for $250.

Edelbrock doesn't recommend the BAP since you won't be paying them the extra $700.

The BAP also doesn't require anywhere near the labor to install which is the best advantage.

 

Spaceme1117, yeah, I caught that pricing "discrepancy" for the 599 HP E-Force Upgrade Kit. $900 from Edelbrock or ~$300 for pump and pulley if sourced separately from other vendors.

I haven't researched the boost a pump but if it will do what I need that would be great! I am a "bang for buck" guy but I'll spend the money to do things right the first time and for peace of mind, ya know? I am frugal and place priority on value. I won't cut corners because I don't want to wreck my engine or get stranded.

Thank you!

Taso

 

also everyone who has one complains about heat soak even up there^. Youll get it no matter what if your heavy footed with a PD blower.But its up to you brother i think a a and a V3 SI with a meth kit and a BAP can get you over 600whp on stock pulley and is carb legal. you can also contact Andy for a new/used kit which is around 4k and its a V3TI which will make over 800whp

 

You seem adamant in changing the ops mind about what he wants. Just because its not what you have doesn't mean its not good.

If the op really doesn't want big power, that will break drivetrain parts, like he says, a bolt on eforce is a good, trouble free choice that is a blast to drive on the street. Heat soak is not the big issue you think, unless racing the car with back to back runs.

 

I don't have an E-Force, but my Heartbeat is pretty much the same thing (Eaton rotor assembly).

1. I ordered my Heartbeat without the supplied hand-held tuner, I saved $200 doing this. Used the savings toward a "real" dyno tune, which is much better.

2. Also, I changed the supplied 96mm drive pulley for a slightly smaller 90mm (3.5") drive pulley. Of course, I then needed the next size shorter drive belt.

3. As far as injectors, I changed out the supplied LS9 (52 Lb/Hr @ 58 PSI) for FIC / Bosch 72 Lb/Hr @ 58 PSI injectors.

4. Then added a Kenne-Bell BAP with a 4 PSI Hobbs switch. This increases fuel flow from 225 Liters/Hr up to 325 Liters/Hr only when your above 4 PSI boost ... Now my injector duty cycle never gets above 72% at max power.

Other than that, the engine still has the stock heads and cam.

I believe you can buy your E-Force without the supplied hand-held tuner, the injectors, or a fuel pump ..... that's what I would look for.

BTW .... With the BAP, there is no need to change out your OEM fuel pump (a bitch of a job).

Some folks may tell you a BAP will kill the longevity of your OEM fuel pump, but I don't believe that ... It only supplies extra voltage to the pump when your in boost. At all other times, your pump receives the standard 13-13.5 volts.

 

To get an idea ... Here is my BAP installed in the forward section of the left rear wheel well area ...


Attachment 48332496

 

I received an update from the RDP Store that the supercharger kit is currently being palleted for shipping to me at Edelbrock!

Taso

 

Another update: Edelbrock called me to arrange delivery. The Supercharger kit will be delivered Thursday morning!

Also I checked with my friend's service shop. The fuel pump labor is 10 hours. I could attempt it myself but the Boost A Pump and Racetronix Fuel Pump harness option is looking much much better. Thank you Spaceme1117 and Turbo6TA for the recommendation!

Taso

 

Hey Everyone!

The supercharger kit was delivered today!




A quick look in the accessories box and I found what looks like a larger aluminum intercooler heat exchanger than the black one shown in the Edelbrock promo pictures. I also found the MAF sensor was included in the kit where the literature said it would have to be purchased separately.

I have to run to an appointment but should be able to go through all the boxes over the weekend to document more of what is included in the kit.

Plus I need to mail the rebate forms to get the additional $500!

Thank you,

Taso

 

I just think the centrifugals are less of a headache. I’m sure once he gets a blower hell love the feel of it and might run into heat soak. like unreal says the centrifugal blowers just work well ECS/A and a or procharger. I contacted vengeance racing and they said they had issues if you were ever to pulley down with the bearings or something???