Hey guys,

I'm stuck in a bind thinking of which system to get. I've narrowed it down to the Vortech and the ATI Procharger. Reasons why I'm not considering any other systems are: I have headers already so turbo's out of the question, Stillen: don't want another hood, HKS which I have a good hook up: doesn't work well with other components unless I ship my car to california and leave it there for them to tune (out of the question since I have one car). That leaves Vortech and the ATI left. Any suggestions on which to get and why?

 

ATI, get the tuner kit, 9 lb. pullies, Walbro fuel pump, 440 injectors, TS ecu flash, emanage (ultimate), and a J&S Safeguard. That's what I have. I am installing a return fuel kit in the coming weeks, as well. When my setup is complete I hope to be pushing 390-400 RWHP. This is the ideal setup for the Procharger, it does not need an FMU, it has the protection of the Safeguard and it has a great deal of tunability. You also do not need to tap into your oil system like the Vortech. I also reccomend that you get a good wideband A/F, fuel pressure, boost, and EGT gauges. If you stick with the standard Procharger kit, you can delete the fuel pump, injectors, pullies, and return fuel system. The Safeguard is a requirement, in order to run safe, IMHO. It allows you to retard timing with boost and it protects from detonationon on a per cylinder basis. If you have any more questions on the ATI setup, let me know.

 

Wow, good answer and very complete. Thanks. I am trying to make a similar choice, but I am considering the single turbo option as well.

 

Hey, thanks for the input. Is there a reason why you went with the ATI instead of the Vortech system other than tapping into the oil system? I would probably be getting the standard kit. Would I need anything else other than J&S Safeguard and guages? Thanks!

 

I decided on the ATI mainly because of the versatility/tuneability. The Procharger got a bad wrap early on, because of the timing issues. The Safeguard addresses that, though. I also got a pretty good deal on a used one with the Safeguard included.

There are some issues that I feel you should know about the Procharger. I just want you to be as informed as possinle. The unit is loud, you cannot hide the fact that you are boosting. I personally like the whine of the compressor, but some people don't like the loud whine. I had issues with fuel pressure dropping while not boosting. I still don't know the cause, but I think it is a restriction in the fuel feed to/through the aux fuel pump splitter. It does not do it all the time, just sometimes. Other Procharger users have seemed to not have this, however, so I think it was my installer's way of installing the fuel system that caused it.

 

Just wanted to add that whichever system that you go with, please ensure that it is tuned properly on a Dyno. Our engines can easily go boom with an improper tune.

 

Just to let you know I'm selling a J&S Safeguard.

https://my350z.com/forum/showthread.php?t=130984

 

Thanks for the heads up Badmonkey. If I were to get the standard kit, what tuning could be done to it? It doesn't come with a EMS, does it? I was just thinking about just sending off the ECU to get refashed. I've already seen your ad Royal T. I've been debating already. =)

 

Just let me know

 

The reflash without injectors or a fuel pump does not affect the fuel tuning. You still have to tune it with the Aux fuel pump and the FMU. You can get the injectors(440cc) and a fuel pump for $400-$500. The install is not too hard. If you are going to get the reflash, I would reccommend getting these. Also, if you are getting the reflash, have them leave the stock timing maps. The J&S allows you to set your own maps. If you have them flash the ecu with their timing maps and the J&S, you will be pulling too much timing, without any provisions to put it back in. I made that mistake without knowing this.

 

Cool, thanks for the info!

 

Or you can get the Vortech kit . It already has timing and fuel taken care of with a piggyback ECU [ included ] The only other thing you need is gauges , unless you plan on adding the smalller pulleys to make up to 11lb's of boost . Quite a few guys are running the smallest 2.87 pulley [ 10 to 11psi ] on the stock Vortech kit with no problems at all . The only extra cash you would need over the kit cost , is gauges and dyno and tuning time . VORTECH...best bang for the buck in superchargers

 

Alright! Finally someone with a Vortech kit posts! Thanks for the input. I don't plan on having anymore boost than stock. Only problem I see with this kit is that I have the upper plenum, headers, High Flow Cats and exhaust already. Wouldn't those bolt ons mess with the piggyback? I also have a AAM reflashed ecu which they could probably reflash it again for the supercharger but the piggyback would still ready differently.

 

If you go Vortech...DO NOT let AAM flash for the kit....ONLY to raise rev limit and speed limit and throttle 100% open .There has been a few guys that have let them try to flash for the kit , and they have not been able to get it right . Your other mods will just add to the hp you get from the kit . If you are looking for a installer and tuner of the Vortech , John Isbell [ formally of Grubb's Infiniti ] Is probably one of the best in your area . He has installed and tuned Vortech's on many G35's . With a GOOD installer and Tuner in your area....Only way to go is Vortech

 

Very interesting....So if I were to go with the Vortech kit, I should send my ECU back to AAM and have them set everything back to stock except for the 3 options you mentioned? How would I go about finding John Isbell? Thanks!

 

Jonh is on the G35Driver.com and 350ZMotoring.com sites Mostly . His name there is .. Rabbid...tell him Booger sent you . You will find the shops name he is at now .

 

Thanks!

 

Thanks for the Vortech info Booger. I am not here to endorse ATI, I am just here to give info. I am very pleased with my setup, however.

Either way you go, get it tuned right. John is a standup guy and will set you right.
Here is John's phone number at the shop. 817-481-5665

 

I was looking into ATI also at the time . What really swaded me , is that we have a certified Vortech installer in town . Installed tons of blowers on many diff cars.

ATI Procharger.....Needs some type of timing control...dont have to tap upper oil pan....very good blower unit....good gains

HKS.....VERY costly...Need certified HKS tuner to tune it.....small gains....safe , well thought out kit

Stillen...Insurable... smog legal ...good trq down low....small gains for the cost...IMO..ugly hood

Vortech...Stock serp belt stretches easily.....BOV whistles loudly .....upper oil pan needs to be tapped.....Good timing and fuel control...easy to learn the tuning program....good gains for the buck.

If any of the info on the other kits is wrong..Please correct me

 

Does anyone have a dyno chart with all the superchargers overlaid so you can compare the way they deliver the power across the rev range?

SportZMagazine has some dyno charts on their Downloads page.