just wondering if anyone can tell me how to get rid of boost cut on a ca18det, i know that i can just run a resistor to the signal wire of the airflow meter but not sure what kind of resistor to run. apparently you can even get a adjustable resistor.

Would another Nissan AFM work ?

I would advise against it. All you're doing is telling the ECU theres less air going into the engine and thats only going to end in tears (on the side of the road in a puddle of oily coolant probably). The fuel cut defenders work in a similar fashion. The next best option would be to get a remap. They're not perfect and certainly can't replace a full ecu but it will remove your fuel cut and speed cut and let you run the higher boost in relatively more safety. Theres a mob on nissansilvia selling them for $200 but I would most certainly get that one remapped :P.

I would advise against it. All you're doing is telling the ECU theres less air going into the engine and thats only going to end in tears (on the side of the road in a puddle of oily coolant probably). The fuel cut defenders work in a similar fashion. The next best option would be to get a remap. They're not perfect and certainly can't replace a full ecu but it will remove your fuel cut and speed cut and let you run the higher boost in relatively more safety. Theres a mob on nissansilvia selling them for $200 but I would most certainly get that one remapped :P.

 

yeh i was thinking about getting a mines chip but can't find where i was looking at them now. it will be done on the dyno and i only want to raise boost cut by about 2-3 psi, which should be no problem as i still have air fuel ratios between 10:0 and 11:0 at full boost. worst case i will put a fuel reg on it to bump up fuel pressure not the best way but will still be safe jsut wont get the full potential as it will be running to rich.

remps are good expecially if you get your ecu remapped on a Dyno. RB20 AFM's are also a great upgrade for $100.

 

Cheers

Jordan

explain more about the rb20 air flow meter, is it just better, or will it raise boost cut as it is off a bigger motor that would draw more air.

If you get a remap definitely get it tuned properly. The off the shelf tunes are pretty average. Below is a GRiD off the shelf tune on an SR20. It wasn't something I purposely looked for just needed an ECU to get the car running. As you can see the AFRs are a bit shonky but it made good power on 12psi. The RB20 AFM will just flow more air i.e. less restriction.

 

http://www.irokin.com/gallery/picKLE-cache...a172kws_640.JPG

A mate tunes Nissan ecu's. Pm'ed

the RB20 AFM is 3" in diameter, and is much better at measureing airflow above 150RWkW.

 

just need to fiddle with the wires to get it wored up correctly

 

Jordan