ECU Tunes and Installs

[Jason Broadhurst]

The triggering in the Adaptronic is automatic, and fixing a threshold voltage due to noise is only masking the problem. Yes it does work sometimes, but it only takes a handful or shitty events at the wrong time to chip corners off a piston.

Also, RPM is only a function of one of the CAS' so the other can be spazzing out and the ECU logs fine.

In this order, report back your findings
1) CAS shield resistance to ground with ECU plugged in
2) CAS shield resistance to ground with ECU unplugged
3) location of CAS shield ground, it should not be sensor ground, but just a regular lug to the chassis
4) has some spastic grounded it at both ends
5) is the CAS shield continuous through plugs/harness
6) repeat steps 1:5 for the cas 0 VDC, ensuring it is to sensor ground and open circuit to ground when the ECU is unplugged

Then it might be time to get a scope out and check inj/ign angles and duration.

[10sec rx7]

The triggering in the Adaptronic is automatic, and fixing a threshold voltage due to noise is only masking the problem. Yes it does work sometimes, but it only takes a handful or shitty events at the wrong time to chip corners off a piston.

So why does every other ecu allow users to map the trigger voltages?

[Jason Broadhurst]

Even the M series does that now, it's not a bad option to have. But wouldn't you rather clean triggering?

[trdee]

hey jason - do you know what the injector offset does on the triggering page? ive always had it set to zero but just noticed the tuner had it changed to 3. would i be correct in assuming it changes which injector fires first in the sequence? if so, then why TF would he have changed it?

[10sec rx7]

Even the M series does that now, it's not a bad option to have. But wouldn't you rather clean triggering?

Unfortunatly that perfect world of clean triggering dosent exist

[Jason Broadhurst]

hey jason - do you know what the injector offset does on the triggering page? ive always had it set to zero but just noticed the tuner had it changed to 3. would i be correct in assuming it changes which injector fires first in the sequence? if so, then why TF would he have changed it?

Yeah, it's the 1342, 3421, 4213, 2134 injection order. It's based on the cylinder to fire after the CAS 2 reset signal. It will not be causing your issue. If you want to be sure, switch it to batched for a test run.

Is it the 24+1+1? Are you using both CAS resets?

[trdee]

ECU Tunes and Installs

Yeah 24 +1+1 Yes I'm using both cas resets. Injectors and coils are both set to full sequential.

Bumped the fuel pressure back up to 43psi last night and undid any changes to the tune. Will see if the fouling issue now goes away. Hopefully it does otherwise it's not related haha


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[trdee]

So after increasing the fuel pressure back to the previous setting of 43psi it instantly stopped fouling plugs! Pretty sure it's those injector spacers now. Going to get the manifold modified to try and have the injectors able to sit there without spacers. Probably also explains the very inconsistent afrs I've had between when the engine is just "warm" and when it is properly heat soaked. The afrs change massively from one condition to the other. If I am having fuel condensing on the walls of the spacers then that dynamic will surely change as the manifold gets heat soaked and the fuel gets hot etc


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[Skippy]

Probably not the place to ask but does anyone have a link to spare correct pins for the plug on the haltech plugs? And what crimper I should be using?

Just looking to clean up my harness

[Jason Broadhurst]

http://broadtune.com.au/ecu-pins-and...-part-numbers/

My website has an increasing list of plugs and pins.

Ebay sell JST crimps and they are around about $80 for a OK set. This thread a few pages back has a post from me with some pictures of mine.

[Skippy]

Thanks Jason that helps heaps.
Any thoughts on decent small crimps to lengthen wires that you can heatshrink over?

[Jason Broadhurst]

They are called open open butt splice's

Various exist, I use plenty in my day to day. It's how OEM's join cable.

[Jason Broadhurst]

http://au.rs-online.com/web/p/crimp-...inals/6801991/

[ROBAPHENT]

So who is going to make the big list of ECU compares? i'm thinking about changing the SM4/500r combo for something else.

[Jason Broadhurst]

Ask who your selected tuner prefers, and tell them the features you want/need.

SM4 is about 40 years old, so it's pretty low on most peoples lists now days.