[turbobuick]

I'm trying to make a decision on turbo kits- PROs & Cons:
ZZP
PROs-maybe:
inexpensive
includes exhaust
lower boost level
due to inherent rear traction loss-this might be perfect (1lb. of boost=10-12 hp),
6-7 lbs of boost= 60-70 hp, do I need anymore? Is this more usable power (passing and making 5th gear more usable).
Less cylinder pressure for a non-forged internals motor (hold-up longer if programming is spot on?)

Cons:
use existing injectors @ static pressure
not enough history in slingshot community.

DDM
PROs:
Proven
Excellent customer service
Borg Warner Turbo
No core charge on pre drilled oil pan
Bigger Matched Injectors
Starts off @ 9lbs +/- of boost

Cons:
Price
Approx $1500 higher than competitor
Have to purchase exhaust @ another $1500+ (now this makes it double the competitor's price)
Going to have rear traction problems (tires)

What would you do, pay an extra $3k for a little more HP?
I might be missing something here, so please can Dave and/or Kevin chime in (haven't heard any non-biast veiwspoints) or any other turbo slings.
Thanks,
Fred

 

[JerriEric]

I don't have to have the fastest, just more passing power in 5th

 

[TravAZ]

I have ran 3 different turbo kits at various boost levels on stock motors, built motors, and junk yard motors. I have also driven a lot of the other turbo and supercharger kits on the market.

When you choose a TC or SC, I always recommend doing it once and doing it right. They are not easy to install and uninstall, unlike shocks or rims/tires. Almost everyone that I have dealt with has started at the lower boost numbers (5-6psi) and has moved up to 8-10psi later down the road. Once you get a taste of the power and learn how to drive with it, you will want more. The sweet spot on a Slingshot is right around 300 RWHP. At this level you get a totally different experience, but it isn't hard to handle the power.

There is also a big difference in the cost of parts that are being used in each kit. You may think the markup is just different, or because of bulk buying, but that isn't the case. Look up what the actual turbo, intercooler, injectors, tune, etc. cost on both kits and you will see why the pricing is different. These kits really shouldn't be looked at as competitors.

In this case, it probably boils down to who is going to do the install and who do you trust more. If you are doing all of the work yourself, it may not be as much as a big deal to do it once as labor is free.

I am sure both options are good. Hopefully this adds some feedback that helps you in your decision.

 

[[email protected]]

I'm trying to make a decision on turbo kits- PROs & Cons:
ZZP
PROs-maybe:
inexpensive
includes exhaust
lower boost level
due to inherent rear traction loss-this might be perfect (1lb. of boost=10-12 hp),
6-7 lbs of boost= 60-70 hp, do I need anymore? Is this more usable power (passing and making 5th gear more usable).
Less cylinder pressure for a non-forged internals motor (hold-up longer if programming is spot on?)

Cons:
use existing injectors @ static pressure
not enough history in slingshot community.

DDM
PROs:
Proven
Excellent customer service
Borg Warner Turbo
No core charge on pre drilled oil pan
Bigger Matched Injectors
Starts off @ 9lbs +/- of boost

Cons:
Price
Approx $1500 higher than competitor
Have to purchase exhaust @ another $1500+ (now this makes it double the competitor's price)
Going to have rear traction problems (tires)

What would you do, pay an extra $3k for a little more HP?
I might be missing something here, so please can Dave and/or Kevin chime in (haven't heard any non-biast veiwspoints) or any other turbo slings.
Thanks,
Fred

It really comes down to what you are looking for in a kit.

The ZZP kit is the cheapest intercooled turbo kit you can buy to add boost to your Slingshot. As you mentioned, the kit does not include injectors and uses a turbo from a "major manufacturer" so it is hard to know what they are using, as it has not been specified yet. The water lines are rubber hoses, the stock pan and drill it yourself, etc. All of these are done to save money on the parts of the kit to keep the retail price as low as possible obviously. If you want to add some power though, it is intercooled and ZZP has been around the engines long enough that there should be no trouble with the kit and it will add power. If you are on a tight budget, this kit will add power and should be reliable.

The DDMWorks kit is designed to be a more premium kit that has future capability built into it. As you stated the kit uses a BorgWarner EFR turbo that offers the fastest spooling and transient times of anything we have ever tested. The turbo water lines are braided stainless steel with all AN fittings on it. A completely new oil pan that already has the oil drain welded to it is included with the kit. The bigger fuel injectors are all flow matched and included with the kit and allow the kit to make high 300's at the wheel if the owner wants more than the upper 200's that the base kit produces.

The kits are really only comparable in the sense that they are both bolt on kits for the Slingshot, otherwise they are really targeted at different customers. I can tell you that the cost of just the components in our kit is more than the retail price of the ZZP kit though, the Borg Warner turbo is an expensive turbo, but amazing and worth it to the people that have driven it.

As for the exhaust, right now the Welter is the only option for our kit. We did this since we have learned over the years that our Slingshot customers that start with an exhaust that exits up front seems to end up with a Welter exiting out the back in the end. So we figured why not launch it with the Welter setup, that being said, there are other options in the future being developed.

There is also some other development going on with another forced induction option that will be coming from us, hopefully before the end of this year also.

If there is anything else we can answer or help you with, just let us know,
Dave

 

[JerriEric]

I'd like to know if there are owners out there that do most of their riding on back roads doing 50+- that have gone turbo or sc and have not regretted loss of mpg? Mpg loss is the only thing from keeping me from Tc or sc.

 

[[email protected]]

Just finished another install on one -

 

[JerriEric]

Beautiful, what is the total out the door install price?

 

[TravAZ]

I'd like to know if there are owners out there that do most of their riding on back roads doing 50+- that have gone turbo or sc and have not regretted loss of mpg? Mpg loss is the only thing from keeping me from Tc or sc.

No. The extra fun is worth the couple of extra dollars at the gas station.

 

[JerriEric]

No. The extra fun is worth the couple of extra dollars at the gas station.

And what is your mpg?

 

[[email protected]]

Beautiful, what is the total out the door install price?

Just the turbo install price is $950, there are a lot of other parts we installed that are not needed with a regular turbo install on his final bill and we had to do a custom exhaust setup because of the 4 wheel conversion which is not standard for installs also.

Hope that helps,
Dave

 

[andymo]

I'd like to know if there are owners out there that do most of their riding on back roads doing 50+- that have gone turbo or sc and have not regretted loss of mpg? Mpg loss is the only thing from keeping me from Tc or sc.

My mileage actually increased somewhat after the Turbo.With over 18,000 miles on my turbo, I average 30 - 32 mpg consistently. This is with the Hahn turbo.

 

[Br4hm4]

And what is your mpg?

Before I went with the big wheels and adding the top, I was getting close to 28-30 mpg with the turbo kit. Over 34mpg with the turbo kit on highway. Last 3 tanks of gas, I am getting just over 26 mpg, mostly backroads or city driving.

 

[Offroender]

My MPG went down considerably. But it’s not parasitic loss. It’s how most people drive once their boosted. The extra acceleration comes from extra power. No matter how you look at it power comes from your gas tank. If your accelerating harder your burning more fuel. Enter the first law of thermodynamics here. In a nutshell if your not using the extra power with a boosted setup your mpg should be relatively close. But then why would you want to spend the $, maintenance, etc etc?