Just wondering why there hasn't been much posted lately about the GTM SC kits for the HR Z's?

 

I've been wondering the same thing! Well waiting for my kit to arrive so maybe after that we get some more reviews

 

It's going to take a while if you just wait. You have to be persistent with them. As the saying goes, the squeaky wheel gets the grease. Better squeak a lot to Sam.

 

/Agree

Took me awhile to get my kit initially but it was due to GTM waiting on a parts shipment from Rotrex and UpRev cables. The parts GTM makes themselves were ready to go fairly quickly but you don't get far with out the other two items.

In the end though you'll be happy. Kits easy to DIY even if your only moderately mechanically inclined and fairly trouble free if you have the knowledge or tuner near by you can bounce questions off of.

The only real issue I've had with the kit since I've had it about a year now is that my compressor blew a seal. Found the ever so expensive Rotrex fluid in my intercooler and piping. GTM took care of the unit in the end and I had a full replacement at no cost, so hats off to them.

 

Oh yeah, major props to their kit. I was even satisfied to their customer service. Mine took a bit to get due to the wastegates. I'd recommend going with them for FI purchases as in ordering kits to ship out. You do have to wait for them though.

 

It took about 4-5 weeks I would say for me to get my kit after I ordered it. But I've had it on for about 2years now and it's still pulling strong. I just had it re-tuned the other week since I got a new exhaust but I'll post a vid.

 

I've waited over a month now but sam's sending updates now and then and is very polite so i've waited nicely. Hopefully he gets it here before easter.

 

Brace yourself for the dreaded high idle code. I've been dealing with this for a few months. I've met a few guys with HRs and this same kit with this issue (one guy spent thousands having it shipped to different dealers in an attempt to fix it). There's another forum member on here who is also having the same issue who has a Nissan tech that's trying to figure it out now. He went to Forged recently and even they couldn't fix it.

Basically, the response we've all gotten from Sam is that since it didn't happen on their test vehicle we're on our own. If you end up getting it (not everyone does) hit me up and I can make some suggestions for you so that you're Z doesn't become a giant paper weight.

 

I would think the code comes from the tune and not the kit itself. I wouldn't go with the GTM reflash. Osiris tune may eliminate any of that.

 

Good deal, I'll try that next as I'm almost out of ideas. Thanks.

 

GTM reflash has had problems before. To my knowledge it's meant more for temporary use until you can tune or for someone in the middle of nowhere with no access to a tuner. I'd never just run the reflash and then not tune. Also, your elevation and environmental levels could be different, throwing the ECU off. I see you're in Tennessee, we have at least 3 shops here in NC that have experience tuning 350z's with Osiris Uprev. SOHO, CIN and National Speed are all very capable. And of course, there's always Z1Motorsports in Georgia.. That should fix your problem.

 

Couple things.

The school of thought that a custom tune is required after installing the kit is not accurate. The kit is designed the same way as a factory OEM car was put together. There is a MAF sensor that measure the amount of air entering the engine and is capable of adjusting based on air density, altitude, and temperature. For example, when you buy a brand new 350z, do you need to get it retuned every time you go from one place to another? No, and the same applies to our supercharger kit. Now, is it a bad idea to custom tune the car? Not at all, especially if you are trying to optimize the tune and get the most out of the system. Our tunes work very well out of the box and they are not aggressive nor overly conservative. They are just right for you to install the kit and drive the car without worrying about blowing anything up. I hope that clarifies things.

In regards to the high idle code, this is not a tuning issue and can never be that for a simple reason: we don't change the idle tables in these tunes unless the customer asks us to raise the idle to help out with an aftermarket clutch and flywheel. Here is the reason why this code could come up. In a stock application, the ECU looks at a couple things for it to determine the idle target. Since it knows the MAF tube diameter and how much air is going through via the voltage the MAF produces, it determines how much it needs to open the throttle to achieve the idle target. Now, once you install the supercharger system which has a larger diameter MAF piping and a little higher MAF voltage due to the supercharger's increased flow, the ECU can no longer achieve its idle rpm target and it is forced to set a code. The solution is quite simple. If the vehicle experiences high idle issue with the 507 code, you need to perform an idle relearn. Every 350Z HR car we have installed on our shop and left, we have never got a call about high idle code or idle issues. I hope this helps anyone that is having issues with idle codes.

Now, I understand that sometimes getting the idle relearn to perform correctly can be challenging. If you can get the car to relearn the idle and once it says "completed" in the Consult III, you will never see this code again so long as you don't reset the battery.

 

^
+1

Thanks for the info, Mike. This is very useful. It's also good to see you guys in the forums again! It's been a while since I've seen updates from you guys.

 

I got the kit yesterday and I'm very pleased with everything. Looks like I'm missing ecu reflash cable, but I have to look through everything again. So far I have only good things to tell people about Sam and GTM... I'm doing install myself now at weekend

 

I've been fighting with this issue for a while now. Slowly crept on me after i put on about 700kms on. Idles anywhere from 1000-1250 rpm. The dump valve makes a ton of noise with a high idle... PM Sent.

 

Right, cause he already has ur money and doesn't give a ratsazz abiout you now! Sam is a Shiester, ripoff, dckhead whatever you want to call him...


I have taken flak in the past for my constant bashing of GTM but I don't care...hope I help someone along the way...

Yes, GTM is a hug RIPOFF! My threads are elsewhere, you can read them...Sam at GTM took my 26K for a long block/TT setup and after 1.5 yrs, he only had a shortblock finished....Got a lawyer, he gave me my **** and took the car elsewhere...In the 1 yr since then, I have lost/had stolen, over 5k in parts from GTM. Sam even built my stroker block w/o proper clearance and the engine wouldn't even turn over after it was installed by another shop....WHAT A COMPLETE A-HOLE. He had PAINTED items I asked to be ceramic coated thereby cheating out of more money..I had to recoat all the parts...He wouldn't retun my HR conversion cooling system to fit my DE and when the other shop asked for it, he replied "why should I help him"? CAUSE IT'S THE RIGHT THING TO DO MF'R!!! Never did get those parts (900) and new shop had to remake them....headlight ballast and wiring was missing, c,losed dumps for waste gates were missing starter was missing etc etc....

Don't believe the hype and BS Sam puts out....I continue to bash his azz cause I have no way of collecting my lost money/parts...(attorney wanted 5k just to begin looking in to it)...

So, this is how I extract my freaking pound of flesh sam Coksukr Zawahara...U f'd me over so until the day I die I will CONTINUE TO bash ur azz everytime I get the chance......

U need some lead n ur diet but I ain't goin' that far...

STAY AWAY FROM GTM FOLKS...LEARN A LESSON FROM ME!!

 

wow 25 grand, thats insane

 

Ordinaryme,
I was curious to know the results of your Supercharger kit. Currently my stage GTM Stage 1.5 SC is running well, especially with the cool Texas weather. I will try and post some video soon. I almost bought GTM's MHI TT kit, but due to waiting forever and a few circumstances, I am in the process of getting a refund. 450 whp on my auto is enough for now. Here's something that the HR's may be interested in:

http://www.ebay.com/itm/181288036873...#ht_185wt_1014

 

I'm that guy who's been to Forged... and may I add Z1 Motorsports and TopSpeed anddd Nissan! Noone can figure out why I have a high idle!
Let me just give you my little story... And I'm not even going to go into how long it took to get my kit when I was kept being told we have all the parts we just have to package them and ship it...
Had this idle issue forever and Forged did alot of work they switched plenums throttle bodies hoses... anything and everything that could cause a high idle to no avail... THEN my intake cam on the drivers side ends up welding itself to the journal! Happened the day after an oil change... All levels were perfect btw...
So got a new engine! Finally put that in and hooked everything up except the plumbing of the ic pipes... its just blowing out the ic currently and I have stock air boxes on to test out if we still have high idle and well sadly yes there still is a high idle right at 1500 (its almost as if there's a double value in the idle code in the ecu)
So my Z has been sitting since the bad news waiting for a new ecu which is on order from Nissan currently and we shall see next week what happens with that... if it fixes it... I think its honestly something wrong with Uprevs licensing and coding in the program...

 

Also another update, I've recently contracted the high idle code virus on my TT HR as well.

Uprev tuned.

I don't believe it's hindering anything functionally, but can get annoying.

hmmmm.


what are your plans after the Nissan ECU comes in? Retune via Uprev or something different?