Hesitation under 3K RPM's
 

Hi all, i have a 2013 SP Z with 6K miles, and it seems that SOMETIMES when i step on the gas under 3K rpm, the car sort of hits a wall and does not seem to accelerate too quickly. After 3k rpms, the car feels great and accelerates with no issue whatsoever. This mostly happens while on 3rd gear. i havent really changed my style of driving, meaning that this is something i was not experiencing before. Ive seen a few threads on this issue but no one seems to find a definite solution. Ive filled up in different gas stations with shell 91 oct (this is the best we have in PR unfortunately), cleaned maf sensors with maf cleaner, reset ecu disconnecting the battery but the problem is still there. Only mod is z1 maf hoses and K&N drop ins which were installed 1k~ miles ago and car felt great after install. If anyone can chime in on this, i would appreciate it. Either way, i will take it to the stealership if i cant solve the issue, but was interested in solving it myself if it was possible. Thanks guys! :tup:

O.ooops. Just noticed i sorted of posted in an incorrect area. Sorry mods, if its necessary please move to correct area. Thanks

first things first, ditch post maf tubes and get a real intake, id suggest takeda stage 2 cold air or stillen Gen 3s

second get a lightweight flywheel, clutch, CSC, and new CMC(you need to change the CSC and CMC to support the new clutch and you switch the new clutch because you are changing flywheels) these will help out the hesitation the most

third, test pipes and an exhaust

all of those should help out hesitation, i dont have that hesitation anymore and i dont have an exhaust(stock nismo exhaust) the hesitation you have is completely normal though, only real way to fix it is with a tune(it has something to do with throttle maps or something like that), all the mods i listed though will help alleviate it though

Thanks luigi, in fact an exhaust and tune are definitely on the way over the next few months and am confident that a tune can fix this. However, it is strange that this symptom was not present before(or at least is not something i had noticed), and all of a sudden does this. From what ive been reading, other people have had the same thing happen, where their car has been fine and then notice this. Not trying to be a d!ck, just pointing it out. Thanks for your reply. Any additional input will be appreciated. :tup:

ya i experienced the same thing with my Z, first few months of owning it i didnt notice any hesitation than hesitation when trying to take off from a dig until i hit 3k than i shot off

at first i thought VDC was the problem so i turned that off and was still getting it, upon further research i learned a tune will get rid of the hesitation entirely, it has something to do with VVEL and throttle tables or something of that sort

i have minimized the hesitation with my mods but it still happens once and a blue moon(2 months ago was the last time i had felt that hesitation) but i think its just something we all noticed after some time with ownership

Thanks luigi, kind of f*cked up that this issue happens to some of us. My car is due for maintenance soon(free oil change ftw... Or loss, not sure :shakes head:) so ill still go and bother the mechanics at the stealership with the issue and see what they diagnose. Cant wait to hear what kind of bullsh*t they tell me. If any input is worth sharing, ill let you know.

Thanks again.

I look forward to it, if it is an issue, then nissan should do something about it

Isn't there a reset for the gas pedal? Maybe reset that.

A little lag may be normal but is it as bad as this?

http://m.youtube.com/watch?v=k-LPrNwDrYE

I'll be honest it seems kinda normal, then again it was so shaky and hard to really see. You aren't really into your torque band until after 3k RPMs.

It is an automatic and if it's not downshifting, well I can't tell you why that's happening.

Didnt know there was a reset for the gas pedal... Ill search but if someone would like to share the instructions, please do.

Ill take a look at the video when i get home tonight, hard to see in my phone. Thanks!!!

Hey Elan! Good to hear from you. True about the tq band, its just that since this was not an issue before is what has me thinking that it isnt normal. Maybe im being a bit anal, but hey, im paying good money for this car, so expectations are high.

Thanks for your reply :tiphat:

Hmm so is your car not downshifting to a low enough gear like it should? Does it feel better in paddle shift mode?

i think his problem is partially because he is overheating his G(since there isnt an oil temp sensor) so his car is cutting a lot of timing exaggerating the bogging effect, i normally dont feel any bog at all unless im really heat soaked either from running the car too hard(260 oil temps) or sitting in traffic for a long time(mostly due to short rams but when i get moving the bogging effect goes away as IATs drop)

Where did you get the OP has a G? He clearly states in his first post it's a 2013 SP Z with 6k.

watch the video someone posted about an auto G bro, read the thread before commenting

EDIT
OP has a 6MT 370z im assuming since he is talking about bogging on 3rd gear

I was trying to stick to the dudes problem not what other's are coming up with. Not really sure why an automatic G came into this discussion in the first place. No transmission issues are ever the same between AT and MT


I'll :bowrofl: to your response being on point to an off topic post...