Gas Pedal Delay

DIGItonium

I read the updated post in your thread. You're right about the gradual throttle ramping with the RPMs. It's so unnatural and feels artificially held back. That explains my boost gauge gradually getting out of vaccum and slowly or barely building boost at times. I do feel the roughness of the throttle similar to rough engagement of the clutch and not being able to keep my foot still on the pedal haha.

What's interesting is that when the car is fairly cool I can get boost to build up at half throttle and low speeds since the BOV flutters at light loads. It's pretty fun in the neighborhood. After awhile I can't get boost to build up unless I hold down the throttle and let it rev past 3-4k RPM, which is not good in the neighborhood (easy to exceed the speed limit).

I even showed my friend by punching it in 1st while turning out of the parking lot with VDC off. The car slowly ramps up, but doesn't spin out of control. His Lotus is so much better on the throttle response even after some hard driving.

This year is definitely a bad year. We're breaking records over here. The car gets so hot that when I press down on the pedal the throttle opens up, and then it hits a ceiling and refuses to do anything else.

Also, do you guys feel it's difficult to quickly rev match with this car? I usually bog on the downshifts because I end up not revving it high enough.

__________________

wstar

Yeah that's troubling. My car's NA, the breathing mods aren't ideal for very-low-end torque, and I'm on 11" wide rear rims (295 tires), and I can break the rear end loose in 1st every time if try, regardless of hot weather or runtime. I usually don't though, I like my tires to last a bit.

Edit: although I should add, it probably helps that I have a very stiff rear sway and some weight loss in the rear

__________________
7AT Track Car!
Journal thread / Car setup details

IcedZ

My Z was basically stock. After the car got hot, no way I could break out in any gear without revving to 4k RPM and dumping the clutch. And yes DIGI, rev matching was affected when I had my car.
Hopefully gonna test drive a BRZ this week =D I'm really missing a sports car (and will not buy another 370 until this issue is resolved). I really wanted to love that car.

kenny's 370z

so something is dumping too much heat in the im causing this bogging.i cant get on the car too long without stopping before i experience this bogging.there has to be one thing that is dumping too much heat into the im besides the obvious heat soak. pcv hoses are not helping for sure.i plan to remedy some of that heat with oil catch cans.i will be looking to see what else i can do to eliminate as much heat as possible.

has anyone done a egr delete or is it even possible on this engine ? that would eliminate more heat from going into the im.and does anyone have a link showing the schematics and what is what on this engine ? i would surely appreciate it !

on a side note,when i have had the bogging,i stopped,popped the hood, and immediately put my hands on the tb's and they were cool to the touch in 82 degree ambient temp.so i know the intake and tb's are not the blame.pcv hoses on the other hand were hot.what is that thing on the back of the engine towards the top that looks like a small motor ? that thing gets very hot.sorry for some of these questions.i have done alot of research on here already and these few things is all i need the answers too por favor.

edit;and my oil temps were 195-205

IcedZ

Is it possible that the PCV valves are getting stuck open when the engine gets hot? That will cause a leaning effect, probably more pronounced at low RPM's.

kenny's 370z

possible.i will be trouble shooting everything i can think of to resolve this issue.i will find the culprit eventually.

EDIT; come to think about it,those pcv hoses ARE dumping extra heat into the front two piston holes.i will do something about this, this weekend and see what my results are for that.

IcedZ

Are the PCVs active? Or are they a standard passive valve on this car?
(I sold my Z, so I don't really have a way to check anymore)