I have been researching for awhile for a twin turbo kit for my g35coupe. Just when i think i have found the best one, here come more players in the game and even makes my decision harder. This is not necessarily a bad thing..i'm loving the options. Well so far the kits i have been really looking forward too lately are power enterprises, APS, SSR Engineering, and JWT.

Can somebody actually give a brief description of the pros and cons for each system to the best of their knowledge also including which kit is mainly what kind of driving (daily-driven, drag, etc.).??

Also by speculation i noticed that only the SSR and JWT offer the dual-intercooling system while the APS and PE kit have one main core. Can someone inform me as to which way of cooling is more efficient to their target goal of their kit? I actually want to keep my stock front bumper, and as you probably already noticed my car have two vents on the left and right side where the middle is blocked. If i installed a kit that had one single intercooler but the middle part of the bumper was covering most of it...would it be deemed as unefficient as compared to the twin intercoolers that would take in the air from both stock vents?

Any comments would be greatly appreciated. thanks guys!

 

Well right now you only have two kits available to you

Power Enterprise and Greddy.

Each has their own gremlins. Personally for the value the Greddy kit is the way to go as long as you have shops that have done the installs who know how to fix some of the short coming of the kits.

You are going to spend more money with the Power Enterprise kit.

With both kits you will eventually need to get a Standalone to manage the car or get the Technosquare ECU upgrade.

With the Greddy Kit you get the E-manage piggy back system which works. However has it's gremlins.

BTW I'm selling a kit for a reasonable PRICE

-J

 

Yea i kno..that's why i said "looking forward" to these kits. Even though your sale on the greddy kit is a great price i might add...i'm still looking at other kits and kits in development before i make a final choice. Time isn't that much of a concern...even though i feel i need to boost very soon . But i am also patient to see which kit will best suit me. Therefore i don't want to be in TOO much of a rush. But some of these unfinished kits i hear aim for september and october releases. Not bad though...i've waited for many other things longer than that in comparison. Also i am still hoping someone can answer me about the whole intercooler deal. Thanks again

 

*bump* noone? =(

 

To me the cons of the Greddy kit would be losing the front bumper beam and the installation time.
The Greddy owners are making the most torque and horsepower so far. The PE kit is nice because you get two intercoolers and get to keep the front bumper, but it costs more. However, the install is supposed to be easy and takes less time.
Personally I went with Vortech (waiting for it to arrive), cost wise I think it offers the most bang for the buck. If the Greddy kit didn't require the bumper to be removed Id have gotten it.

 

You don't get two intercoolers with the PE kit. It's one intercooler but it fits behind the bumper without having to remove the brace. JWT's kit will be two intercooler, and SSR Engineering is also two intercoolers. Those are for the G35 I believe and the 350z kits will have one intercooler.

 

Overall, i would say that the quality and components of the Power Enterprises kit is better but from my understanding of it there still isn't a good fuel/timing solution besides a Technosquare ECU flash. Also, my understanding of it is that you're stuck at a static boost level since the fuel and timing can't be changed on the fly. One last thing about the PE kit is that I have yet to see any actual dyno results for the 350z/g35 kit.

The Greddy kit is a little cheaper (even though install might cost you more). It does offer and out of the box fuel solution (eManage) and with an extra harness a timing solution as well. Combined with an e01 boost controller different fuel/timing maps can be saved for different boost levels. This giving you the ability to run one setting daily (say 6psi) and switch on the fly to a higher level (8psi) for the drag strip or unlucky vette. There are also MANY owners of the Greddy kit on the board with dyno proven results and lots of helpful knowledge.

I'm certainly not a turbo expert, but this is my understanding of the kits so far..

 

I have the PE kit and I love it. With a VERY VERY safe program at only 4.34 psi I am making pretty good times (-6-8 degrees of timing taken off and a 10.7-11.2 a/f @ top end). I have posted all this before in a separate thread, you can check it out.

Allow me to express my opinion, and it is only that, so please no flaming. If I make a mistake on anything factual, do not hesitate to point it out, i'll be the firstto admit it.

PE:
I believe that the kit is more complete out of the box:
1) the turbos are ball-bearing PE1420's (as opposed to sleeve type mistubishi's)
2) they are better sized for the engine, as long as you are boosting under ~15-17psi, after which Greddy will be more efficient than PE.
3) comes with a nice (cooling) oil pan
4) hand-made, ported SS manifolds
5) the best intercooler money can buy (ARC)
6) plug-in PE380cc injectors (no need to hack up wires to install them)
7) the kit comes with a full fuel return fuel system, complete with a walbro 255 and a rising rate FPR (something that would cost at least an additional ~$400 to be added to the greddy setup).
8) you get to keep your bumper brace - the loss of which was a deal-breaker for me
9) the kit fits very well, almost like a glove (there was only 1 pipe that needed bending to give more clearance than was provided originally) - but then again, remember this kit was tested only on the coupe and i have a sedan.
10) right out of the box, you only need the correct TS reflash to run higher boost (no fuel pumps/fpr's to add - all included) - in addition to the boost controller which is neede din both cases.
11) IMO, the fact that it requires no additional hardware and that it can safely be controlled by the native ECU with the correct program, was the biggest selling point for me. I just did not want two different computers to talk to eachother.

All for about $800-1000 more than Greddy. The downside is that you will prolly need to wait for a while til your kit arrives (I have been waiting since April), unless you can order one directly from PE.
You CAN add emanage onto PE if you wish, or HKS F-con for that matter (greddy said that emanage WILL work with pe injectors).

Greddy:
1) Much more capable of efficient higher boost levels then PE (bigger turbos, larger injectors).
2) The cast iron manifolds are virtually indestructable and will last forever, while PE's ported SS manifolds, though superior, are much more prone to expansion and cracking (more so if you do not take care of them).
4) comes with emanage, which in combination with the correct/selectable map, can deliver efficient power production at any selected boost level, while with PE (if you choose to stay without any piggyback computers), you are tuned (by way of a TS reflash) for the highest boost that you will run, allowing you to safely turn down boost (and run less than most efficiently possible through of course safe). Of course emanage can be had for under $300 if you so choose.
5) if you are going to be running higher boost - e-manage can clamp the maf voltage at 5.00v, preventing the car from going into limp mode. SO far, however, this has not been seen on the PE at up to 9psi of boost.
6) and here is a biggie, greddy actually has a presence in the US rather than just a small office in orange county, SoCal (i.e. PE) (although personally, I could careless about this as it will be IMPOSSIBLE for you to get anything out of greddy/any other company, should something go wrong in a major way). So you definitely have more support here - a great thing!
7) Greddy is more likely to be carb-approved SOME DAY, whereas PE will NOT ever be IMO.

Guys, feel free to add to this list/coorect me. It's late and I may have missed something.

Gurgen