Rev hang should only be experienced by the 2.0T crowd, the NA 3.8L shouldn't have this issue at all. No BOV present in NA cars....
Rev hang explanation...
By Jay at SuperDrift
"Well, there has been many speculations and researches by shops, but we got this "unofficial" explanation straight from the horse's mouth. We can't name who, but he/she worked on the Gen coupe project.
The rev hang (partial opening of the throttle) was put into the throttle body control in order to lessen the blow by gas emission. During the development Hyundai researchers experienced that if a throttle body closes immediately, pressure inside the engine(crankcase) becomes so great, it caused more oil vaporization than usual. This is quite normal for any turbo charged engines, but Hyundai wanted even better emissions and didn't want to deal with the "oil loss" issues. Thus by partially keeping the throttle body open even after gas pedal has been completely released, pressure can escape from engine.
So, here is what we found out. Solution to the rev hang issue will be to fix the throttle body control codes in the ECU, install oil catch can and add oil every month.."
"Well, there has been many speculations and researches by shops, but we got this "unofficial" explanation straight from the horse's mouth. We can't name who, but he/she worked on the Gen coupe project.
The rev hang (partial opening of the throttle) was put into the throttle body control in order to lessen the blow by gas emission. During the development Hyundai researchers experienced that if a throttle body closes immediately, pressure inside the engine(crankcase) becomes so great, it caused more oil vaporization than usual. This is quite normal for any turbo charged engines, but Hyundai wanted even better emissions and didn't want to deal with the "oil loss" issues. Thus by partially keeping the throttle body open even after gas pedal has been completely released, pressure can escape from engine.
So, here is what we found out. Solution to the rev hang issue will be to fix the throttle body control codes in the ECU, install oil catch can and add oil every month.."
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From the first post of this thread:I understand that, but there was a rev hang issue with the 3.8 in most of the reviews of it. There was a TSB for it specifically. It's part of the reason the 3.8 A/T did better on the track than the M/T. However, it was ECU related. It sounds like you guys are talking about a mechanical rev hang issue.
I'm coming from a 2.3T car, (Speed 6) and I'm trying to figure out how the BOV/BPV would cause the revs to hang?
"....
Makes a lot of sense, since it can be eliminated using different methods (PA flash, Aftermarket BOV)By Jay at SuperDrift
"Well, there has been many speculations and researches by shops, but we got this "unofficial" explanation straight from the horse's mouth. We can't name who, but he/she worked on the Gen coupe project.
The rev hang (partial opening of the throttle) was put into the throttle body control in order to lessen the blow by gas emission. During the development Hyundai researchers experienced that if a throttle body closes immediately, pressure inside the engine(crankcase) becomes so great, it caused more oil vaporization than usual. This is quite normal for any turbo charged engines, but Hyundai wanted even better emissions and didn't want to deal with the "oil loss" issues. Thus by partially keeping the throttle body open even after gas pedal has been completely released, pressure can escape from engine.
So, here is what we found out. Solution to the rev hang issue will be to fix the throttle body control codes in the ECU, install oil catch can and add oil every month.."
NO probs, I do the same all the time..Ahhh...I should have read the entire thread. That is an interesting way to keep the pressure down though.
I'll try to pay attention better before posting...my bad.
1 - 3 of 24 Posts
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