Supercharger Starting/Idle problem

Baer383 · 09-12-2013, 09:47 PM

I don't have any idle issues, afr 14.3-14.9 idle speed 800-825

Good luck with your problem.

DIGItonium · 09-12-2013, 10:32 PM

Quote:

Originally Posted by ANMVQ

Sorry man LOL Digi.

I tried, sent logs, and I never heard back from them. I think I stopped getting any support from GTM since the Hallman Pro RX installation at the dealer.

My car was with Baker for over a month, and I was expecting for a tune. All I got was the out of box tune when I picked up the car. I don't think they had time to get it dyno tuned.

So I'm assuming the initial white smoke I see once in awhile when daily driving is excess fuel since the test pipe installation?

The nearest tuner is Modifed by KC (MKC). Next would be some place in Dallas like JoTech. [shrugs]

ANMVQ · 09-13-2013, 07:15 AM

Quote:

Originally Posted by DIGItonium

I tried, sent logs, and I never heard back from them. I think I stopped getting any support from GTM since the Hallman Pro RX installation at the dealer.

My car was with Baker for over a month, and I was expecting for a tune. All I got was the out of box tune when I picked up the car. I don't think they had time to get it dyno tuned.

So I'm assuming the initial white smoke I see once in awhile when daily driving is excess fuel since the test pipe installation?

The nearest tuner is Modifed by KC (MKC). Next would be some place in Dallas like JoTech. [shrugs]

Well sorry about the non support from GTM( not suprised) Just my .02 tho..

But I would really take it to ge tuned and fix that issue, they may be other things going on. You do not want to end up like I did. An my tuner was really adamint about me getting to him when I was having the start up issues. Washing the cylinders is a serious concern. White smoke anytime is not good,

DIGItonium · 09-13-2013, 09:31 AM

The white smoke doesn't happen often, and it's usually when I get moving after a cold start. Some reading points out to to condensation. Other than that, my oil and water reservoir is good. Next oil change is coming up next week so I'll see if there's any fuel smell in the oil. I've only had the test pipes installed for about 3 months.

I had the hot start issue well before the MBC installation, and I pressed on trying to get updates from GTM. No response. It has been 34k miles since the installation, and I dealt with this almost everyday. Starting to feel the rough idle lately as well, so I might do a compression test the next time the spark plugs get pulled. So I'll try to do some sanity checks before getting it tuned since the goal of switching to a 3" exhaust setup is a bit distant.

Chuck33079 · 09-13-2013, 09:32 AM

Quote:

Originally Posted by DIGItonium

The white smoke doesn't happen often, and it's usually when I get moving after a cold start. Some reading points out to to condensation.

That's most likely the issue.

John@Z1 · 09-13-2013, 10:04 AM

This looks like a simple fix. The Stillen kit is a little harder to get to idle correctly but it's not that hard to do. PM if your tuner doesn't figure it out.

theDreamer · 09-13-2013, 11:56 AM

Just dropped my Z off, will see the results if they can fix it today.

hyunsoo1803 · 09-13-2013, 02:00 PM

Thanks for the responses guys ! I really appreciated.

I will keep you guys posted once I go see my tuner next week

DIGItonium · 09-13-2013, 02:04 PM

Quote:

Originally Posted by theDreamer

Just dropped my Z off, will see the results if they can fix it today.

Guess I'll have to make a 10 hour trip to visit you guys again eh? The EX is totally out of the picture, so I'm all for some responsible drinking in Htown while getting my car tuned haahah.

future370zzz · 09-13-2013, 03:43 PM

Hope you get your issues resolved. I will need to make sure my tuner works out the hot/cold idle and start issues before I pick up the car. Let's see how he does with 850cc injectors.

My Sentra has hot start issues, turns out its a faulty fuel pressure regulator. After you car warms up and then starts to cool, pressure drops and you have to crank it, stop and re-crank to start it up. Works every time but it's annoying.

Let us know when it gets fixed.

hyunsoo1803 · 09-17-2013, 07:23 PM

The car now has 70,000KM and that Stillen Sc kit may be stressing the engine with old spark plugs. My car is going to for a tune check up sometime this week.

I have some questions for experts in this community

1. Spark Plugs: What system, or brand do you guys use for FI application? Anything one step colder than OEM ones?

2. What's the a/f ratio range when the idle is unstable. For me, it was 13.5-15.2 surging up and down while RPM needle struggled to keep the car running. When stable idle, it usually sits at 14.4-14.7

3. Do you think SRM affects the idle RPM speed? I remember my tuner saying he set the RPM to 800 to 850 ish but I sometimes see stable 700-750 :/

VERY CONFUSED

Baer383 · 09-17-2013, 07:53 PM

Quote:

Originally Posted by hyunsoo1803

The car now has 70,000KM and that Stillen Sc kit may be stressing the engine with old spark plugs. My car is going to for a tune check up sometime this week.

I have some questions for experts in this community

1. Spark Plugs: What system, or brand do you guys use for FI application? Anything one step colder than OEM ones?

2. What's the a/f ratio range when the idle is unstable. For me, it was 13.5-15.2 surging up and down while RPM needle struggled to keep the car running. When stable idle, it usually sits at 14.4-14.7

3. Do you think SRM affects the idle RPM speed? I remember my tuner saying he set the RPM to 800 to 850 ish but I sometimes see stable 700-750 :/

VERY CONFUSED

Plugs one step colder,GTR plugs work well
AFR should be 14.3-14.9 thats what mine is
Idle speed on mine is 800 b/c it is a 6sp

The idle surging up and down is b/c your tuner must tune the MAF @ idle instead of using the fuel comp table.

hyunsoo1803 · 09-17-2013, 10:13 PM

Thanks for quick response !

My car thought it would be funny to throw a random engine light

Baer383 · 09-17-2013, 10:21 PM

Quote:

Originally Posted by hyunsoo1803

Thanks for quick response !

My car thought it would be funny to throw a random engine light

I check to see what code it is and if it is BS I shut it off with Uprev.

hyunsoo1803 · 09-17-2013, 10:38 PM

Dont have the reader here with me it idles high. 1000-1050.

Heading down to a shop first thing in the morning

09-12-2013, 09:47 PM	#16 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 30	I don't have any idle issues, afr 14.3-14.9 idle speed 800-825 Good luck with your problem. __________________ 2013 ZL1 754 rwhp 747 rwtq

09-13-2013, 09:31 AM	#19 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	The white smoke doesn't happen often, and it's usually when I get moving after a cold start. Some reading points out to to condensation. Other than that, my oil and water reservoir is good. Next oil change is coming up next week so I'll see if there's any fuel smell in the oil. I've only had the test pipes installed for about 3 months. I had the hot start issue well before the MBC installation, and I pressed on trying to get updates from GTM. No response. It has been 34k miles since the installation, and I dealt with this almost everyday. Starting to feel the rough idle lately as well, so I might do a compression test the next time the spark plugs get pulled. So I'll try to do some sanity checks before getting it tuned since the goal of switching to a 3" exhaust setup is a bit distant. __________________

09-13-2013, 10:04 AM	#21 (permalink)
John@Z1 The370Z.com Sponsor Join Date: Nov 2008 Location: GA Posts: 1,589 Drives: Turbos Rep Power: 20	This looks like a simple fix. The Stillen kit is a little harder to get to idle correctly but it's not that hard to do. PM if your tuner doesn't figure it out. __________________ Z1 Motorsports will beat any advertised price on Nissan OEM Parts! 770-838-7777 ext 311 AIM: JohnatZ1 email: John@Z1motorsports.com

09-13-2013, 11:56 AM	#22 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4210	Just dropped my Z off, will see the results if they can fix it today. __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

09-13-2013, 02:00 PM	#23 (permalink)
hyunsoo1803 Track Member Join Date: Mar 2010 Location: Canada Posts: 556 Drives: 370z Rep Power: 16	Thanks for the responses guys ! I really appreciated. I will keep you guys posted once I go see my tuner next week __________________ \|Stillen\|KW\|Volks\|Evo-R\|Bridgestone\|Hotchikis\|Project Kics\|Southbend\|Berk\|Status\|Innovate\|Nismo\|Greddy\|

09-13-2013, 03:43 PM	#25 (permalink)
future370zzz Track Member Join Date: Dec 2011 Location: Bay Area Posts: 555 Drives: 10 Nissan 370z Rep Power: 14	Hope you get your issues resolved. I will need to make sure my tuner works out the hot/cold idle and start issues before I pick up the car. Let's see how he does with 850cc injectors. My Sentra has hot start issues, turns out its a faulty fuel pressure regulator. After you car warms up and then starts to cool, pressure drops and you have to crank it, stop and re-crank to start it up. Works every time but it's annoying. Let us know when it gets fixed.

09-17-2013, 07:23 PM	#26 (permalink)
hyunsoo1803 Track Member Join Date: Mar 2010 Location: Canada Posts: 556 Drives: 370z Rep Power: 16	The car now has 70,000KM and that Stillen Sc kit may be stressing the engine with old spark plugs. My car is going to for a tune check up sometime this week. I have some questions for experts in this community 1. Spark Plugs: What system, or brand do you guys use for FI application? Anything one step colder than OEM ones? 2. What's the a/f ratio range when the idle is unstable. For me, it was 13.5-15.2 surging up and down while RPM needle struggled to keep the car running. When stable idle, it usually sits at 14.4-14.7 3. Do you think SRM affects the idle RPM speed? I remember my tuner saying he set the RPM to 800 to 850 ish but I sometimes see stable 700-750 :/ VERY CONFUSED __________________ \|Stillen\|KW\|Volks\|Evo-R\|Bridgestone\|Hotchikis\|Project Kics\|Southbend\|Berk\|Status\|Innovate\|Nismo\|Greddy\|

09-17-2013, 10:13 PM	#28 (permalink)
hyunsoo1803 Track Member Join Date: Mar 2010 Location: Canada Posts: 556 Drives: 370z Rep Power: 16	Thanks for quick response ! My car thought it would be funny to throw a random engine light __________________ \|Stillen\|KW\|Volks\|Evo-R\|Bridgestone\|Hotchikis\|Project Kics\|Southbend\|Berk\|Status\|Innovate\|Nismo\|Greddy\|

09-17-2013, 10:38 PM	#30 (permalink)
hyunsoo1803 Track Member Join Date: Mar 2010 Location: Canada Posts: 556 Drives: 370z Rep Power: 16	Dont have the reader here with me it idles high. 1000-1050. Heading down to a shop first thing in the morning __________________ \|Stillen\|KW\|Volks\|Evo-R\|Bridgestone\|Hotchikis\|Project Kics\|Southbend\|Berk\|Status\|Innovate\|Nismo\|Greddy\|

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