Search found 10 matches

by Angle
Mon Mar 09, 2009 10:10 pm
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

Yep, I have a multimeter, will give it a go. Haven't had time to look at it again yet ...
by Angle
Sun Mar 08, 2009 9:31 pm
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

Pete, Yes I made it run at 15, still the same. Here is a weird log when making it run off the main map (tps switch off), I noticed the tps voltage is changing (although it is in the same position), this might be due to the battery voltage changing as the rpm rises/ falls, but it appears to be in syn...
by Angle
Sun Mar 08, 2009 8:14 pm
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

No luck with getting it to idle properly under 1500 rpm. It will idle fine above this both off the idle map (tps switch off) and idle settings (tps switch on). It still does the same with everything blocked off including aac and cold start idle valve. Pete, it is about 200mm from the compressor whee...
by Angle
Sun Mar 08, 2009 1:46 pm
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

Chris, Thanks, I will test nothing at 15 deg later today hopefully, I have no bov and most things are blocked now, I will try to get it idling stable. You could be right about the wiring, but when logging in stream mode it never goes to 0v which doesn't make sense as it has higher resolution than tu...
by Angle
Sun Mar 08, 2009 10:09 am
Forum: DLP
Topic: Configure D/A converter with AEM UEGO ?
Replies: 24
Views: 16553

I noticed you have the Wideband set twice, I think this is designed for running two separate Widebands. Try it with the second one set to none and see what happens.
by Angle
Sun Mar 08, 2009 10:03 am
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

Matt, I've sprayed aerostart everywhere checking for external leaks so it doesn't appear external, so maybe disconnecting the afm might help check for internal (AAC, idle valves) leaks, but the rpm doesn't appear to relate to MAF voltage. The end of the 1531_27 log has the MAF going from 0v to 2.6v ...
by Angle
Sat Mar 07, 2009 4:49 pm
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

I logged it again in tuner mode and it still does it with this AFM.

Here is a log, you can see it at the end.
by Angle
Sat Mar 07, 2009 4:48 pm
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

I have changed the MAF back to the original one. The idle is still majorly hunting, I suspect an airleak or bad aac/idle valve, but I can't find it. I cleaned the aac valve and it looked ok.

Attached is the stream mode log.
by Angle
Sat Mar 07, 2009 1:08 pm
Forum: General Nistune Discussion
Topic: MAF spiking on HCR32
Replies: 16
Views: 3735

MAF spiking on HCR32

I have a problem where the MAF voltage seems to be spiking. I have tried another known working MAF and it is doing the same, which leads me to think it is wiring or ECU. I have attached a log file, showing the problem, you can see it spike to 0v and up to 1.5v at idle where it should be around 1.3V....
by Angle
Fri Mar 06, 2009 1:25 pm
Forum: DLP
Topic: Configure D/A converter with AEM UEGO ?
Replies: 24
Views: 16553

I have a similar setup but using an Autronic Analyser, I have only quickly tested it but Nistune appears to show the same as the Analyser display. I only hooked up the ground on the DLP to the sensor ground of the Autronic and pin 1 of the DLP to the Autronic 0 to 5v output. So only two wires are ho...