so i got an 89 5.0 with a turbo.i used the diyauto mustang basemap toget it started....have it starting and idling decent . my questions though: in the tune it was set for a 350?
i idle at 101.2 kPa? dontunderstand at all.this is dwn from 115.idle speed went up as i tuned jus like it was supposed too
also tuner studio wont read corectl with my aem wideband nor will it save that i am using a wideband it keeps reverting back to narrow band
high kPa idle and 02 sensor issues
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
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Re: high kPa idle and 02 sensor issues
The displacement number is not part of the tune file - the tuning software just defaults to it.
Make sure your MAP sensor is plumbed up correctly. An idle kPa in the 100 range usually means the MAP line is broken or run to the wrong port.
Make sure your MAP sensor is plumbed up correctly. An idle kPa in the 100 range usually means the MAP line is broken or run to the wrong port.
Re: high kPa idle and 02 sensor issues
Okay so i checked all my lines and the ms2 line was not connected, goshdarn budlight: ) but anywho....my idle still falls in the line of around 80? is this anymore normal? i do have a cam in there so I thought it might be lower but....its not? Any ideras
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Matt Cramer
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- Joined: Sat Jul 03, 2004 11:35 am
Re: high kPa idle and 02 sensor issues
You can probably tune it to pull a bit more vacuum by adjusting the fuel and advance unless that's a very wild cam.
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kjones6039
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Re: high kPa idle and 02 sensor issues
That must be a heck of a cam!
Just for reference.......
I am running this cam in a 383 SBC ..........
Advertised Duration 280 int./288 exh.
Intake Valve Lift 0.576 in.
Exhaust Valve Lift 0.570 in.
Lobe Separation (degrees) 113
Certainly not huge but not mild either.
I have a solid idle at 850-900 rpm at 42 kPa
80 kPa just seems awfully high to me.
Ken
Just for reference.......
I am running this cam in a 383 SBC ..........
Advertised Duration 280 int./288 exh.
Intake Valve Lift 0.576 in.
Exhaust Valve Lift 0.570 in.
Lobe Separation (degrees) 113
Certainly not huge but not mild either.
I have a solid idle at 850-900 rpm at 42 kPa
80 kPa just seems awfully high to me.
Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
Re: high kPa idle and 02 sensor issues
I thought that sounded high, i believe it is .585 lift with like 310 or so duration, it was in the car when I bought it and it is quite sizeable compared to stock. So I guess ill just tune it as it sits.
the idle did sound cleaner once I Corrected my vacumm situation, and it did drop ,so could i be save to assume that I dont have any Leaks?
the idle did sound cleaner once I Corrected my vacumm situation, and it did drop ,so could i be save to assume that I dont have any Leaks?