Search found 50 matches

by Benkku
Wed Feb 08, 2012 10:37 pm
Forum: Feature Requests
Topic: More accurate charge temp estimation (like Autronic)
Replies: 14
Views: 22139

Re: More accurate charge temp estimation (like Autronic)

Proceed with those changes i recommended - of course, the air temp table needs to be correctly defined.

You said that engine is 'leaning out' - which means, that actual engine drawn air temperature, is lower than measured and/or air temp correction table is wrongly defined.
by Benkku
Thu Feb 02, 2012 12:43 pm
Forum: Feature Requests
Topic: More accurate charge temp estimation (like Autronic)
Replies: 14
Views: 22139

Re: More accurate charge temp estimation (like Autronic)

Yes i know 'that phenomen' from some daily drivers, where inlet manifold temp raises through convection. Consider repositioning air temp sensor, to the plenum near cylinder runner/inlet track opening. Inlet manifold thermal barrier coating/painting and plating (ie. polymer plate under inlet gasket) ...
by Benkku
Thu Feb 02, 2012 4:29 am
Forum: General Syvecs Chat
Topic: new to all this!
Replies: 9
Views: 16665

Re: new to all this!

Looks mighty fine! But do not start it until you have a proper crankshaft dampener, either new stock unit or ATI one. With the wheel in first pic you will end up with broken crank. Been there done that :) really? if these things are not better then why do they sell them? is it a common 1jz problem?...
by Benkku
Mon Jan 30, 2012 2:01 am
Forum: Feature Requests
Topic: More accurate charge temp estimation (like Autronic)
Replies: 14
Views: 22139

Re: More accurate charge temp estimation (like Autronic)

Neither at low load, that's my experience with this ecu. AFR/lambda stays nicely at defined value. At least, i had no difficulties mapping despite of largely varying air temp (-20 deg c to 55 deg c), ecu follows nicely. You wrote... "After mapping the fueling nicely to the desired value at low load/...
by Benkku
Mon Jan 30, 2012 1:55 am
Forum: Feature Requests
Topic: Gear Cut/Blip on H-Pattern gearbox
Replies: 2
Views: 3078

Re: Gear Cut/Blip on H-Pattern gearbox

Surely one can employ an tension/compression load cell, to most H-pattern boxes. Easiest thing to mount on, one of the FWD car gear change link rod. For the RWD cars, there is bending type load cells available, mounting to the gearstick. Instrumentation is always more bombproof, than pattern logic, ...
by Benkku
Thu Jan 26, 2012 12:26 am
Forum: Feature Requests
Topic: More accurate charge temp estimation (like Autronic)
Replies: 14
Views: 22139

Re: More accurate charge temp estimation (like Autronic)

There is table (and possibility to use temp sensor for the purpose) for charge air temperature, which - in my opinion, covers this perfectly well. Under load, charge air temperature is not related to charge air velocity at all, but pressure vs. temperature - which follows ideal gas law and compresso...
by Benkku
Tue Jan 17, 2012 10:35 pm
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 46
Views: 65167

Re: NTK L2H2 New Linearisation

Purpose of the calibration resistor is to 'tell' to the circuitry/electronics, what is the ion cell current at the free air condition. Pump cell current level is different between these sensors. Altought pump cell current does not differentiate nor similarize sensors, when this resistance 'informati...
by Benkku
Sat Jan 14, 2012 11:37 pm
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 46
Views: 65167

Re: NTK L2H2 New Linearisation

I think that each sensor needs to calibrate individually. All sensors has 'somewhat different' linearization curve and/or slope, when resistor value differs among other.

Btw.... by 'such a high resistor' value - at my earlier post, i mean/meant L2H2 type.
by Benkku
Wed Jan 11, 2012 3:39 am
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 46
Views: 65167

Re: NTK L2H2 New Linearisation

Yeah, maybe so... but none of these sensors, do not contain such a high valued (10K or so) calibration resistors. Bosch is using 30-300 ohms range (from memory), NTK range is 'somewhat unknown', but i have measured values from around 260 to 607 ohms. Here is one NTK L2H2 type pinout, with Bosch conn...
by Benkku
Tue Jan 10, 2012 2:41 pm
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 46
Views: 65167

Re: NTK L2H2 New Linearisation

Only the L1H1 has a calibration resistor - NTK L2H2, and I imagine the Walkers copy, do not have the calibration resistor. Are you absolutely sure about that? Asked this directly from NGK Europe subsidiary, and they responded that sensors contains resistor. "we are not selling a trimmed wide band s...