Jun camshaft .. Help !!
 

After install my camshaft on 370z i have hard accleration and more backfire on my invida exhaust .. And before install the cam my car have m370 and 650cc injector with uprev then remove all the setup when installing a camshaft

Any problem with drive my car under hard acceleration and without retune it

Sorry for my language ☺️

Link : http://youtu.be/K6y9wM3KI3M:confused:

You installed JUN cams and didnt retune? Be surprised its running. You need to get tuned ASAP

:iagree:

/thread

Post a Dyno graph of before and after

http://undergrad.osu.edu/buckeyes_bl...ified-pic3.jpg

get a tune as soon as u can. i wouldnt even be driving the car right now to be honest

You need an uprev protuner or another software (ECUtek?) that can adjust VVEL and almost definitely fuel and spark too. I would NOT drive it too much until then.

EDIT: Fixed your link --> Link : 370z exhuast jun camshaft 282 issue !! Are this problem ?? - YouTube

yes, go get a tune then tell us all how it went. did you install any other supporting mods with the cams?

I will be tune it in sat

No only camshaft on head engine without aftermarket valve train

Of course i will be post it after tune

Flash the car with the OEM Uprev Patched Rom. It can be downloaded through the Rom Editor.
This will Fix 80 to 90% of the issues. Since your Z had 600cc injectors an you put back in the OEM ones, this through off the fuel multiplier and scaling.
Doing this will pretty much put it back to Stock other then the the Patched ROM.
This should enable you to drive the car to get it all sorted out with the new cams.

:ughdance:

I dont have OBD II for tuning my car by myself .. I will be waiting for dyno garage who have a uprev osiris tune

Well then.. The Shop will know what to do then. Cannot wait to see how the Cams work out for you..

Where did you get the cams from? I would like to get a set

Did you get the buckets replace with a different size due to the increase in duration of the cams? This has to be done so the valve doesn't hit the piston. I have the JUN cams and have no problems. These are not just drop in cams. You don't have to get a retune right away because JUN made these cams to run on the stock program so that's not your problem. You really need to make sue the intake side is still in factory spec with the VVEL actuators. Go to the dealership there and tell them you need the VVEL actuators reset to factory cause there is a long procedure they have to do in order to reset it. I was there for my entire build so if any other questions please ask