leon_83

Hi guys,
i'm a italian owner, this is my second s2000 06+ (DBW), and for the first time i had heavy problems on track during corners. Specifically, when i run the corners, expecially on the right side, with the partial throttle, then i go in WOT and the car has an esitation ( like a power supply vacuum), as if it drowned. So, i'm forced to release the throttle and then be able to give full gas.
I have read several threads on some similar problems but without having found anuthing relevant (regarding vacuum problems, TPS, coil plugs, ecc...)
On straights and on the fast corners, the car runs fine
Below some features of my car (2008 m.y. dbw, 26000 km)
- J's header/TP/single exhaust
- ASM throttle body
- Toda/ASM pulley kit
- 4.57 final drive
- Flashpro tuning
- Oil catch tank on the breather line ( the pcv has only a small filter fit on the tube that goes on the intake plenum)
- OEM iridium spark plug, new engine oil (filled up to one notch above the minimum level)
- VSA off for all track session
- no oil smoke while driving
Unfortunately i could't datalogging by Flashpro during the days, since i did not have it to me

I appreciate your help
Thanks

flanders

Without a data log you can only guess, so try capture the problem in a log and you should probably find the reason pretty easy.

leon_83

Hi, i know that the best way is to make a datalog when the issue appearss....but unfortunately for me this sistuation go out only on track, and on the street is really difficult to reply the track drive style. so, before i can get a new track session, i was hoping to get some similar experiences by other owners

freq

Fuel starvation?

yamahaSHO

That's what I am putting my money on.

jyeung528

that's really cool that you're an italian owner.

maybe throttle body?

hope you find the issue.

DavidNJ

Ditto, or low oil pressure which would affect the VTEC.

Are you running a baffled oil pan? Do you have a surge tank?

Car Analogy

He said oil level is down to just oje notch above min on dipstick. In other words, almost to min. Way too low for track. Possible cause?

rpg51

Yea, why would you only fill the oil up to one notch above minimum? That seems a bit odd.

s2000Junky

Yeah total fail!

95% this was the problem, starving the oil pick up, going into vtec out of a turn and no oil pressure. Stupid. Why would anyone run the car at the min oil level, let alone on the track! If anything you want to overfill one x mark to keep from this very thing happening. Without a baffled oil pan or slosh plate, you get a lot of side to side movement in heavy G corners and can starve the engine. Over filling slightly will add some margin and prevent possibly starving the engine in these conditions. But at least have the oil topped off where its supposed to be!