Nistune Forums

Hi Mate, I see you haven't had any feedback so thought I'd chip in some comments. I haven't gone to check out the manual however the AFR 14.7 and K constant adjustment are only loosely related. The Nissan ECU has heaps of different adjustments that keep the motor in tune during warmup and when up to...

Hi Mat, any progress on your testing?

Hi Pete, Yes My initial thinking was to use Nissan solenoids and I tried both from the CA and RB family as well as a number of after marked ones which supposedly worked with PWM signals. Unfortunately they just didn't respond freely enough to the PWM Frequency even through the board is adjustable (6...

This seems a bit of an obsession but I have been chasing this problem, off and on, now since 2010. I have built a few motors in that time and experimented with a number of configurations. However the one thing that has been consistent through out is this off idle retarding. I saw a number of threads...

Sorry about the poor quality of the schematic. The LM324N is a quad opamp pack and the pin numbers on the sketch aren't right but gives you the basis of what I did. I'll post an actual drawing over the next few days. This opamp was also selected becasue it doesn't need a split rails +/- power supply...

Hi Matt,

Attached are three versions ver P, Q & R however I have tried at lease 6 variations of each.

During cold start and running the car pulls great down low off boost however something happens once the motor gets up to temp.

Anything you can find would be appreciated. Cheers Richard

I have seen threads on the topic before but no final posts on the solution. The issue is the timing once I come off idle. I set the TPS correctly and is closed at idle. Motor running at 850rpm with timing set at 15 deg on my timing light. Motor temp is 85 deg C so no cold start issues and I have dup...

I was working with a mate on exactly the same problem and did the same as everyone has done. Replaced MAF, ECU, Injectors, K constant, Injector Latancy and massive changes to the fuue map, tested fuel presure, fuel regulator etc but nothing worked. We even had an identical setup (Different car howev...

Just thought I'd share what I did to solve my electronic boost control problem. I bought a simple PWM (Pulse Width Modulator) kit $25 and setup an Opamp input circuit with two controls. One control (0-5vdc) manages the setpoint (Boost level) and the other is the input from my MAF, both 0-5v signals....

My CA18DET has been timed to 15deg at 850rpm however when the throttle is opened and revs start to build, the timing goes from 15deg to 5 deg then at around 3000rpm comes back up 20 deg which is what I expect. In spite of changing the main timing maps, this seems to be a persistent characteristic. D...

Thanks. Good to clear that up.. Cheers

Boost control through the standard CA18DET ECU I have looked through a number of threds for informationon about controlling the boost control solenoid valve through the use of the standard ECU. Unfortunately haven't found the information. I notice pin 5 appears to be the output to the Boost control ...

Are you still chasing a ROM file? It's been a while so suspect not. If so drop me a line, it is exacly what I was running until recently.

I recently shifted to E85 and can confirm everything in this thread. Well done everyone. For those interested in boosting NA blocks, as a small project, I recently installed a high comp (12:1 higher than stock) NA motor (Stock internals) and tuned it for 14 PSI on 98 Oct fuel with very aggressive ti...

One of the other mods I have done to the ECU is to replicate the ECU fault circuitry to a diplay on the dash so I can set the fault mod on the fly and check any of the faults at any time. One of the things I have noticed is a code 21 fault being reported. This is an ignition coil pulse error and has...