Overheating after GTM stage 1 supercharger installed. .plz help
 

Hi all..
I installed GTM stage 1 supercharger kit on my Z370 2012 AT transmission. I drove it on street it is much faster then before...however I noticed that temp is raising to 4 & 5 on the engine heat electric gage. ..this is at night and driving normal...if speeding it reaches even more than half gage! !!
This was not the case before installing the supercharger !! Can't know what is wrong...I noticed that there was detonation so the mechanic reduced the horsepower by 15HP and it was gone....please help me

what tune are you using? the flash that came with the kit?

Did you not install any coolers?

Yes oil cooler is there and intercooler

I took it to a workshop an they tuned the manufacturer ECU on the dyno

What software did they use, Uprev? Unless im not remembering the water temp gauge correctly, 4 to 5 dots sounds normal, unless the scale is somehow different in the UAE, can we have a picture of the gauge ?

Am not sure which software they used...and the gage is exactly the same as US cars...normal days it's 3 bars only...in mid day around 2 pm when outside temp is 42 C° it reaches 4 bars....however now it at night and outside temp is only 31C° and it's going 4 to 5 bars on normal driving and if I speed it goes to the 6th and more bars

The gage looks like this
z370 heat gage -

It has reached the 10th point when I drove at a speed of 210KM for less than 5 minutes constantly

It may be worth taking it back to the shop that installed it, they would know better than anything how they built it and what they encountered and didn't tell you along the way.

Besides they should stand behind there work and clear any of the issues

4,5 dots is normal for me after a bit of driving. If you're driving around at 130 for 5 minutes in 31 degrees C ( 90 degrees F) in the UAE, I'd def recommend a bigger radiator.

The dash gauge is not linear, IIRC. Buy or borrow an ODB/CAN scanner and see what the water temperature really is.

I took it and they tried everything and Check all...nothing seems to be fulty

My friend own same car but he installed Stillen superchar. ..and he really drives fast pushing the engine to maximum limits...6 bars was the highest he recall seeing. ..stock radiator

Potential overheating issues aside, did you do anything to strengthen that AT of yours?

How is the coolant reservoir? Is it full or empty? Maybe they didn't bleed the cooling system properly. Air in the system would cause overheating. When I installed my gtm superchager the fan shroud had to come out. If not careful the radiator could have been easily damaged. I would check that first.

Just oil cooler installed

Do u mean the electric fan in front of the radiator? It's cooling fine...about air in the system..how to know if their is air?

Check with your tuner and make sure that they modified the fan tables so the radiator fan comes on earlier and at a higher speed.

I would also recommend an upgraded radiator.

I mean that fan needed to be removed. Once removed the radiator is exposed. When installing supercharger parts the radiator could get accidently punctured by a tool/part causing a small leak. Did u check the coolant reservoir?

The Stillen kit is an air-to-water intercooler with a very small heat exchanger. The GTM kit has a hefty air-to-air intercooler which might be blocking too much of the radiator. The air that would hit your intercooler directly when stock now has to go through a 4" inctercooler core and now that air is much warmer when it hits the radiator.

Get an upgraded radiator (CSF), make sure you're running straight water+water wetter, and make sure the fan tables are set to come on much sooner than stock. That will likely help a lot.

You only stated you add an oil cooler you NEED a trans cooler for sure and make sure that the tuner change the fan speeds and when they kick on. I had mine change to 100% speed at 185 Deg, and never had and issue when I was FI 100+ deg temps out side, AC blasting.

If you dont get a trans cooler OH and BTW make sure the torque tables where changed you will need a tranny

This should give you a good idea of where the dots put you:
http://www.the370z.com/engine-drivet...-readings.html

Chuck is correct, upgrade the radiator along with the fan speed, this will allow better overall cooling along with keeping it cooler longer since the fans will kick on at a lower temp & can spin higher if needed.

Am really getting fed-up with this upgrade...a lot of headache plus I really don't have time for this...I spent many days trying to figure what could be the problem...that's end up here :eek:
I will uninstal the supercharger and return my car to original condition...this project is over...I will pack the supercharger and offer it for sale...any dam price and let it go...not my way of handling my lovely Z....can't stand many mechanics playing, testing, trying, driving it anymore...already many scarchs done by them and their dam tools...
Bye bye GTM supercharger :eekdance:
Thank you all for your great support and help...really appreciate it
:bowrofl:

That's certainly one way to do it. It's a little extreme for something that would be solved with a radiator and a couple of gallons of water.

Or adjusting the tune, I ran for a couple years with just an oil cooler, there was no radiator upgrade just fan speed.
Proper coolant, fan speed, and a good tune will work wonders but the other additions will just take it to the next level.

His climate is also a hell of a lot more extreme than ours. Any build over there needs all of the cooling upgrades. He might need a vented hood as well.

It's absolutely two things, the weather here is extremely hot...and tune issue....might be also cuz it's AT Trans. ..this why I decided to end this project...can't spend more....Boxes are ready for the kit...in 4 days my turn in the work shop will come...and all will be taken out from my car going to boxes....and next is sell it...I will let it go for the first best offer...maybe if someone can install anywhere that is colder and had better tuning software. ..engine overheat won't come...

It's not because it's an auto. All you need is a $500 radiator and some water. The tune issue could be fixed in five minutes. It would be cheaper to fix the problem than take the kit off.

You might be right....but I noticed another thing...the RPM some times moves up when I press the puddle but the car does not respond...like when you r driving a manual gear and you are pressing the clutch. ...
Mechanic told me it could be tourq converter issue...some times it happens. ...other times it's normal...however, if I put it on tiptronic manual and change the gear manually, everything seems to be fine...

Did your tuner increase the line pressure in your tranny?

OK. ..let's summaries the case:-
1- When driving normal, gear is on D ....Car moves fine but puddle response is very bad...I press fully I get low response. ..I pess all the way down...RPM goes to 4,5,6,7...but the car is moving very slow...
2- I put the gear on M..start with gear 1 press hard...car moves fantastic but then power gows down after RPM reaches 5 or 6...I shift to 2 gear and the car jumps and moves very fast till RPM 4 then as if some on is holding it from moving...I shift to third it Flys but then at RPM 3 it dies again. ..same till gear 7
3- engine overheat when RPM goes above 3 or driving fast...heat gage on the digital gage reads 4 on idle and normal driving. ..it reads 9,10,11 whenever I speed or push the engine to upove RPM 4
4- any kick down will result RPM moves up fast but lag on speed...
5- dyno tune was done using up review. ..5 settings...max HP was 310 on the wheel....
6- Gtm supercharger stage 1 kit installed with engine oil cooler and intercooler...600cc injectors and full pump that comes with the kit..
7- fans are programed to cool faster earlier.
8- noise is there as if you r driving the car and there is no oil in the powerstering system.
9- Oil and filter is changed....termostat is changed...plugs changed...radiator water changed and reserva is full...

None of the above was happening be4 installing the supercharger...car was smooth running nice with no issues at all...maintained ever 5k KM in the agency...zero defects.

Are you sure it's not the transmission downshifting? With seven gears, there's a lot of shifting going on.

Tranny cooler for the above :/ ^^, Ug spend all that money, Hit on small bump in the road and rip it out, God I wish I had $$$$ like that to lose :/

The lag in gears sounds like the tuner needs to work on the trans tune. My car is a 7AT with a Stillen supercharger and it responds very quick. I had lots of cooling problems because of the coolers being stacked, is your oil cooler right in front of your radiator?

This. Your tuner sucks. 310 whp? Find a new guy. The one you have is incompetent. Fix the fan settings and the trans line pressure, replace the radiator. Run straight water and water wetter. With a good tune and the cooling addressed, your problems will go away.

Yes it's in front of the radiator

I will give it another try and see before removing the supercharger

:iagree:

Guess I missed a post where he only made 310whp. Definitely a shitty tuner. **** I made 310whp NA.