cuanto hp te haria feliz? los numeros con tu DJ pueden ser conseguidos sin problema con un HKS sc

 

Congrats man, hope you're enjoying your ride. Do you have some numbers?
Can I ask how much you end up spending?
Any stability issues?

 

Max HKS I have seen is 400-410HP for 10K installed...

 

I put down 417whp on a 5AT running out of fuel due to lack of injector. Those numbers CANNOT easily be put down on the HKS system.

GTM sells their Stage 5 kit for $9K, plus whatever exhaust mods and extra mods you put it, and they've gotten 394whp out of it running stand alone. That less power with over $3K more invested. Plus, I'm hoping to hit 420-430. I don't even have a plenum spacer right now...lol.

I'm not knocking on the HKS system since it sure is well built, but it's kinda weak for the money invested.

417whp with some issues, hopefully I'll get 420-430whp when I'm done ( maybe next week ).

I put about $6K into it with everything said and done.

Stability? We'll 1st gear is useless and 2nd gear will kick you to the side sometimes...lol.

I think I've only seen one HKS car put 400whp.

 

[QUOTE=GT-ER;8725294
Stability? We'll 1st gear is useless and 2nd gear will kick you to the side sometimes...lol.



I think I've only seen one HKS car put 400whp.[/QUOTE]

When you mean useless, is it always skitting? how is the daily driving on it? if you drive "normal", do you have issues w/ the 1-2 gears? or is the SC just too powerful for the tires regardless?

 

Good number.. 427whp@339rwtq is good! Specially on an AT. In terms of the hks, I guess the $9k makes up for the visits to the mechanics, shops, headaches, time working on the car, etc... since first day(bought a used kit) I had no problems with the kit even though I drive it like I stole it(my DD/track car). I put down around 384whp@378rwtq on a DJ at max boost with slipping clutch on a 03 DE MT(abused since i first got it); tuned using osiris. Since first day I also never touched the engine to fix anything other than fluids and exchanging air filters. IMO up to the 400whp range the hks is not a weak kit; It is true that it won't go over the 400whp's(US), but having the tq close to the 400's makes a huge difference. Also, The quality of the HKS kit and how reliable is makes up for all the money is worth; there is a lot of engineering research down in JP to support this, and also a lot of racer cars that uses the kit and have showed competition achievements with the same kit it is offered to people.

BTW, the HKS kit is proven to go over 400whp. In japan, there is for example the Z400SC.. that car is putting somewhere around 500 +/-. This is done with a built block and an upgraded blower. Sadly, the products are not offer to US public.

I think there was a lot misleading info about the hks kit in here, so i chimed in...

End of the day! both kits have pro's and con's and both are awesome to a certain point!

 

It drives perfectly normal as it did stock...when you go wide open throttle is when things change drastically. I have 285 wide falken tires and they spin pretty badly in 1st.


I feel my kit has been VERY reliable...I just keep wanting more and more and thus I keep spending time and money on it...lol. I'm my own mechanic so that's not a problem for me.

As for the HKS unit...I'm sure I wouldn't have hated it as it does look like a great kit ( and better made than the Vortech one ), but for all out power I'm hoping for 500whp on my 5AT EVENTUALLY.

 

what stage HKS do you have? What kind of times are you getting? Any thoughts of GTM HKS stages? (I'm leaning towards stage 3 as it's legal in Cali, otherwise love to get stage 5)

Also, what kind of gauges did you get w/ the HKS?

 

same here! I had 285's and it was useless bro! I ended up using t1r's for the street and hoosier's for the track. BTW, DIY's FTMFW, i also do all the work on my car but tunning lol; I wish I could have the extra time to learn it. Anyways! Best of luck with the 5AT reaching 500whp!

I don't drag buddy what is that??? lol j/k SC won't give you great result on the drag strip based from what I've seen.. ST's and TT's are a whole different thing.. stage 0 is the only one carb legal from what I know, but I might be wrong. You can check that with SAM@GTM. I have a stage five using Osiris instead of the vpro. Check the hks thread i have if you need to know more about it, lots of guys posted tons of useful info/data in there.

 

i seemed to do pretty good at the strip with my s/c setup, much better than alot of turbo setups ive seen

 

i'm pretty much debating the same decision as the topic starter..

can some of the vortech en hks drivers describe how the car feels compared to stock?

does anyone know what gtm does exactly to the hks blower?

 

Cool, I'll look at your thread and find more info. I have 285's too, so I guess I'll still get a lot of skitting...

I'm waiting to talk to Sam further, and in the mean while, trying to learn as much about HKS/Vortech as possible.

From what I've seen on the forum (I have yet to see Vortech or HKS SC in person) the HKS has lower sound (I prefer a more subtle setup), higher low end Trq (great for daily driving), more reliable (on average, although there seems to be tons of Vortechs that have been ok too), and overall better match for the 350Z.

What goes against it is max HP of ~400 (which is ok by me since even at that HP, there's a lot of skitting on the 1-2 gears), and the expense (you get what you paid for...).

Since the kit goes on a Cali car (SC only, no TT), and that it will be a daily driver, I wanted the most reliable, worry free set up as I don't have too much time to take the car back to the shop if there's any issues. Also there is no guarantee that I'll be living close to the shop (ie GTM) even if I have the time to keep taking the car to the shop. Plus if I go any higher on the HP, then I have to start thinking about changing engine components like rods, etc.

So it seems that HKS, at least for me, is the set up of choice. I'll keep digging around and find more specific info on various HKS stages.

ps. I did get a chance to talk to Sam very briefly last week, and he said that stage 3 is the highest carb legal set up. I wonder though if you can still go w/ stage 5, but have multiple set ups / mapping on the F-CON. One for stage5 type setting, and one for stage 3 type setting (less aggressive timing) so that smog check can be passed. Seems to me the main diff of stage 3 and 5 is the F-Con and fuel system.

 

check the overall standings.. look at how many non-build TT are in the list compare to vortech sc's.. do the math/statistics

https://my350z.com/forum/drag/233840...ons-stock.html

just an example...

 

Nice find ITOzann.

 

im very aware of the list as im number 1 on the supercharged list and 24 on the overall top 25..if u look and do some research every TT setup on there basically in the 11's or faster is built and on slicks or DR's, and there are few people who do go run there supercharged setups with proper tire setups if u notice all the street tires on the supercharged list compared to the others with DR/slicks..tires make a huge difference in numbers at the track..power is power if u can make it and put it down u can run a good time no matter if ur power adder is skittles..myself and oldmanz both with vortechs and a good tire setup seemed to hold up just fine..just look at the difference in 60ft. times that tells all..the ones who can drive and have a good tires setup do just fine..

ur inexperienced at the track just leave it at that without spreading info to people that is untrue that they cant go out and run good times with the right setup and driving on a supercharged car,there is so much to running at the track besides what u bring there.. trust me i know turbo setups also and know that a good TT setup is superior to a supercharged setup but overall both can be fun and if done right a superchaged car will hold its own

 

I don't know. Actually he made the point for vortech over HKS based on times. For people stuck w/ having to only choose between various supercharges, seems vortech is the best in terms of price and times point of view.


as for safety, jury is still out it seems. If you guys could only pick a supercharger, and wanted to pick the safest / most reliable one, which one would it be knowing everything you know?

 

True! but I tracked motorcycles since I was 4 years old and cars since I was 16. I simply don't drag strip cause the runs you get don't don't make me happy for how much time and money you invest for the time in track you get. It is fun, but I can afford it. I always rather having a full track day of road race. LOTS of track time I might not have enough experience on a drag strips, or knowledge but based on lots of time of research/lots of data I gathered all this years and education on the engineering field I can come up with a conclusion based on supporting facts. I don't talk based on what people tell me or stories I hear.

Definitely, both set ups can be "FUN" along with a good suspension/tires/weight balance at a drag strip

However, if you put a SC 350z against a TT 350z with same driver skills, tire set up, suspension, drag strip, boost level, etc please tell me what is gonna be the results; Both set ups will be "FUN" but who is gonna get the best times...

I myself own a sc and I know it can be fun with the proper set up. But, if you are getting an FI system for an specific application like drag strips in this case, IMO a TT set up will always bring better results in the long run than a sc; either in terms of times or power gains.

 

if u live in cali i would undoubtedly get a complete vortech kit and run the 3.12 pulley with exhaust and plenum spacer on stock internals with just a re-tune of the ss box..very safe, simple and reliable setup and will get u 400whp on a dynojet and around 350-360ft. lbs. and cause u know problems in any way u look at it....Do not buy a used kit no matte which way u go and with the vortech u will get a 3 year warranty if need be with buying the complete kit

 

what psi does 3.12 pulley provide. same w/ stage 5 or 3 HKS?

 

3.12 pulley is a 9psi pulley...not sure on the hks kits but without the porting of the blower that gtm does it will not make the power the vortech will easily