^+1 on that! sounds and runs better with K&Ns

 

let me know what they say about the shudder, I've been battling with Infiniti of Nashua, NH over this damn shudder forever. Its when Im cruising and I apply light throttle the car will shake violently. A slight slip/bang/bump/thump whatever the heck it is happens when im steadily accelerating through 2nd to 3rd gear and it is really starting to annoy me to the point that this car will be sold soon. Could my r2c's be making this worse as i was experiencing this before installing these anyways?

 

Thanks for replies guys,

I have rescheduled my appt to the 16th of this month. This should give me time to get everything back to stock. I had to re-order some OEM parts... should be here before the 16th or so.

I will report back what the dealership finds about this shudder issue.

 

i might be there around that time for my oil change , will let u know

 

Good luck on this issue! hope they can fix the problem under warranty.

 

So I am not the only person with the shudder!?

I noticed it while the car is in drive mostly but it really seems to be a downshift issue if you ask me.

Cruising on the freeway about 45 to 55 at a slight uphill.... cruise with your foot off the throttle and then gently and slightly ease on the gas pedal to bring the speed up, shudder. Recreate the situation but stab the pedal a lil harder and it downshifts and you are up 10+mph.

I took my 06 g35 sedan into the dealer at 36k miles a few months ago and complained about shudder and possible broken motormount do to sudden on/off acceleration from 0 throttle. They said my rear brake pads were wasted, cabin filter needed changing and tranny fluid never changed. Said my K&N was plugged.

I was frustrated that they could not recreate the shudder so I took it home. I cleaned the air filter and it was great again with a mild proper easy throttle for about 1k miles. So I pulled the K&N and threw in a stp disposable and back to good response. Its back to crappy harsh response after 1.5k miles



The shudder persists. My rear brake pads still had 10k miles but I changed them. Still thinking about the tranny flush.

I rebuilt alot of old fords and they had a vacuum hose and kickdown cable that I would be looking at for the lack of downshifting. Consider at the times I experience the shudder would be at times of high vacuum as my foot is resting on gas pedal.

 

Yep, just keep your old OEMs and save them to put back in when ever you go to the dealer, then put them back in storage until your next dealer issue, that's what I do