limp mode mod

[Rumcajs]

looks complicated, is there any info about how to rig it up? probably wouldnt mind trying the voltage clipper mod first

It is complicated (JDVM), soldering and electronic skills (a little) are required but not necessary. The results are incredible.
I don't get impressed easily but this must be one of the best mods I have ever done to ZD30.

For something more simple you could try Jaycar fuel cut defeat kit


productLarge_13954.jpg

Cheers

[Hodge]

This is what my local mechanic/turbo place does. He doesn't subscribe to any of this dawes/needle stuff. He's had 4-5 blokes come in with dawes valves and stuff, and hes ripped it out, tinkered with the MAF voltage, and the owners couldn't believe the difference when they picked the car up.
They also do this when they fit a chip. He didn't reveal specifics, but showed me some dyno sheets to prove it.

[Rumcajs]

This is what my local mechanic/turbo place does. He doesn't subscribe to any of this dawes/needle stuff. He's had 4-5 blokes come in with dawes valves and stuff, and hes ripped it out, tinkered with the MAF voltage, and the owners couldn't believe the difference when they picked the car up.
They also do this when they fit a chip. He didn't reveal specifics, but showed me some dyno sheets to prove it.

Meddling with MAF voltages is/can be dangerous to the engine and is more advanced stuff. I keep Dawes valves and needle valve as added mechanical safety.
Cheers

[Rickie3]

For something more simple you could try Jaycar fuel cut defeat kit


productLarge_13954.jpg

Cheers

i'm pretty good with a soldering iron, and pretty good on having a crack at electronics, with that simple circuit shouldnt be hard, my biggest problem would be locating the MAP signal input and the output to ECU?

[Rumcajs]

i'm pretty good with a soldering iron, and pretty good on having a crack at electronics, with that simple circuit shouldnt be hard, my biggest problem would be locating the MAP signal input and the output to ECU?

Well, both MAF (Manifold Air Flow sensor) and MAP (Manifold Absolute Pressure sensor aka boost sensor) will need to be "clamped" or not go over 3.99 V so I'd use two of those units together for both, boost sensor and MAF voltage because both of those sensors will play the role in Limp mode.

If you are good at soldering and electronics than I suggest getting JDVM and hand controller instead, you gonna be impressed what can you do with it.

Locating signal wires for MAF and MAP are easy/trivial indeed the easiest part of the job.

Cheers

[Rickie3]

Well, both MAF (Manifold Air Flow sensor) and MAP (Manifold Absolute Pressure sensor aka boost sensor) will need to be "clamped" or not go over 3.99 V so I'd use two of those units together for both, boost sensor and MAF voltage because both of those sensors will play the role in Limp mode.

If you are good at soldering and electronics than I suggest getting JDVM and hand controller instead, you gonna be impressed what can you do with it.

Locating signal wires for MAF and MAP are easy/trivial indeed the easiest part of the job.

Cheers

I thought boost sensor was disregarded with dawes and needle valve installed?, unfortunately dont have the cash to buy the JDVM unit, so I couldnt just use one fuel cut kit for the MAF?, if the boost controller is still used then I would buy the second fuel cut unit? I purchased 1 unit last night online, when I get some extra coin will buy JDVM unit

[threedogs]

Sounds interesting any links to item you purchased.
You say impressed , what does it do, does it allow better performance for EG

[Rickie3]

Sounds interesting any links to item you purchased.
You say impressed , what does it do, does it allow better performance for EG

https://www.jaycar.com/productView.a...UBCATID=965#11

[Rickie3]

Just went out and removed air filter and the airbox had water in it, so that explains where the water came from, I recon it was in my snorkel, I did wash the car yesterday, anyway, disconnected everything and dried everything thoroughly, re-asemmbled, now the big girl is hitting 16psi and flys and no signs of limp mode yet, but I am looking forward to doing the other mods

[threedogs]

I'm interested on what it achieves I'm like Mudski with 20psi max and 10psi at 100ks,
never looks like going into limp mode.If it improves economy or boosts performance
I'm all ears. Diesel smart have some system that will give you 50% performance increase
but at a high cost, maybe that is along these lines