Anyone here knows why many Zs have problem after intalling intake like JWT Popcharger or HKS RS??
Some experience rough idle. Some have engine stalled at 90 mph.....and some are lucky enough not to have any issues

Is it the installation problem or our Z ?

 

Reset your ECU! If you didn't do that first, that cause the rought idle...

Hova

 

Hova,

I had to find out the hard way with my HKS RS intake. I tried everything. Reset ECU(from technosquare and pull out batter wire over night). Still same problem. Put back the stock intake still same thing. I had to bring the car to dealer and had ECU + throttle body replaced.

I am leaning toward JWT intake...but i dont wanna go through same problem again.

 

The jwt had no issues on my car. Just unplug the battery and do the install. After plug the battery in and let the car idle for a bit. Take it for a spin. Should be fine.

How the hell did u mess up your throttle body? You did something weird. You sure you didnt mean the MAF Sensor?

 

I dont know WTF happened. I brought the car to dealer with stock intake on. THey asked me if I had any mod ..of course i told them no...the SES was on too..
They diagnosed the car...they said ECU threw some weird error codes. They even called Nissan engineers and those guys had no idea either. They ended up replaced ECU (10 freaken days for the part). The car still stalled on warm start(restart engine when it's warm). They tested it again. It had some thing to do with throttle plate control or actuator. They ended up replace the whole throttle body. I asked the tech if MAF had any problem. He said ECU would've thrown some MAF codes but it did not

 

Sounds for like a defect to your car. What year was is your car? And how long have you had it before this happened?

I have never seen an intake cause a problem like that. Just the MAF.

 

I never had any problem stock. I installed HKS RS with brand new filter. Took it for a test drive, it stalled(put gear back in neutral) after i push over 4k rpm in 4th gear....and problem like the above thread

 

bump

 

i have the same idle problem after jwt install but didnt unplug battery b4 install did it after and cant really tell but it idles at like 700 and sometimes drops, tried the technosquare thing and i couldnt figure out how to do the darn thing.

 

The solution is to leave the car stock.

 

LOL!

I've had JWT popcharger since October of 2005 and I still havn't had a problem. I've cleaned it 3 times since, reoiled it and everything.

 

no problems here, follow directions

 

^^ nicely said.

 

My car will stall if i put it in neutral going over like 90 MPH after a hard run. This is nothing new. A lot of cars with open CAI's will do this. My 300zx twin did this with the JWT pop charger, and my buddies MKIV turbo supra does this as well.

It doesnt concern me at all because I never put my car into neutral at those speeds.

 

Pretty dangours if stall at those speed...I guess i give it another shot with JWT

 

i didnt even disconnect my battery

havent had any problems...it's been on for about 10k miles

 

Same here.

-djb

 

There was a discussion about this before, Majority of the members believe that the oiling on the JWT PC is being sucked into the intake tract and covering the MAF sensor or something along those lines.

 

So if thats true then what are we suppose to do, not clean it?? hmmmm....

 

No problems with JWT since Oct '05. Oil "lightly" is the key.