eCtune

Posted: **Fri Aug 28, 2009 3:30 am**

Been having problems with my Z6 Vitara build. The car was driving fine for a few days and also on the day it died. I drove it in the morn and when i went to drive it down to the dyno the car starts to runs like it doesnt have a map sensor. I hooked the stock back up and it will run at about 1-2k but if you go above that it sounds like a knock/backfire. Also will still die if it goes below 1k. It wont start up unless i have the gas pushed in to the floor and when it kicks over i let off enough to keep it running. My buddy has the same build on a Y8 and he is having the same problems. Please help! also i have not updated the car to the newest update but please just take a look and see if you see something thats wrong. Thanks

Posted: **Fri Aug 28, 2009 4:58 pm**

Bump..anyone?

Posted: **Fri Aug 28, 2009 7:06 pm**

Any chance you'd have a datalog?

Posted: **Fri Aug 28, 2009 8:17 pm**

Force updated and it didnt help..The data log looks fine..i dont have one to post up sorry

Posted: **Fri Aug 28, 2009 9:07 pm**

make a new cal and copy/paste the old values. for shits and giggles.

Posted: **Sun Aug 30, 2009 7:05 pm**

and make a log file

Posted: **Mon Aug 31, 2009 12:17 pm**

98vtec wrote:make a new cal and copy/paste the old values. for shits and giggles.

i have tried dif cals that useres have uploaded and it wouldnt even start. I noticed that its reading boost at idle? well at 1k when i hold it there. Ill post up a log a lil later on today. Thanks everyone

Posted: **Mon Aug 31, 2009 1:36 pm**

so i started A new base and it started up but its still rough..i took it for a little drive as you can see in the log. Please take a look and see what you think.

Posted: **Mon Aug 31, 2009 8:31 pm**

Anyone?

Posted: **Fri Sep 04, 2009 9:10 am**

will have a look later

Posted: **Fri Sep 04, 2009 10:39 am**

Have you checked for a vacuum leak?

Posted: **Sat Sep 05, 2009 10:37 am**

sounds like you need to trace your steps and ensure everything on the engine was installed properly. are you able to pull any CEL codes via eCtune? are you running an aftermarket ecu conversion harness? Sometimes i have seen the pins lose their connection and cause problems without throwing a code so you might want to look there. are you tuning yourself or is this being done by an authorized tuner? How are you monitoring AFR? if you are seeing boost at idle, then you would have to have one hell of a vacuum leak for it to pull boost. I dont know if thats even possible.

Posted: **Sat Sep 05, 2009 11:53 am**

i pulled the VC and adjusted the valves and it is pulling normal vacuum now. When i started the new cal the boost/vac thing went away. the car seems to run fine now. heres a new Log take a look and see if you see anything that jumps out at you. No CEL's No harness its all OBD1 to OBD1 car Im using a Wideband

Posted: **Mon Sep 07, 2009 12:34 pm**

Posted: **Wed Sep 09, 2009 7:25 am**

How much vacumn do you pull on your boost gauge? Do you have gm 3 bar map sensor?

eCtune

Fresh Build..No idle

Fresh Build..No idle