Turbo Timer

[DCBStingerGT]

My fellow Aussie forum members will remember the Holden VL Commodore with the RB30ET Nissan 3.0ltr turbo engine, i used to own a 1988 VL Commodore turbo BT1 ex-police interceptor, it was recommended especially after pushing the turbo hard, to have a turbo timer, or like i did, let the engine idle for maybe at least 2 minutes, so the oil can continue to lubricate the turbo turbine as it whines down, before shutting off the engine.
Im interested to know, if these modern turbo engines, like the 3.3ltr V6TT in the Stinger require or recommends engine idle after driving hard to maintain the twin turbos, anyone who has knowledge on this, or opinion on this are welcome.

Nissan RB30ET engine in a Holden VL Commodore turbo model.

 

[Terra]

Ahhhhh they were the day's ...........

Not needed now, however do not push it hard and then turn it off. You should always continue to drive at normal speeds for at least another five minutes..

 

[DCBStingerGT]

Not needed now, however do not push it hard and then turn it off. You should always continue to drive at normal speeds for at least another five minutes..

Ok , thanx for the advice, im still waiting on my Stinger, the more i know the better.

Ahhhhh they were the day's ..........

You're so right, i think im trying to recreate the driving enjoyment i had in my VL, with the Stinger, because after almost 13 years since i sold the VL, i still miss it so much, the way the turbo just wanted to keep on going faster, and that turbo whistle it made........ sorry i had to stop a minute...i think im getting emotional remembering, like you said...Ahhhhh they were the days...haha, i used to maintain it all myself, with plenty of room to oil change or replace the spark plugs, or replace the fuel filter, it had LSD, 80ltr long-range fuel tank, mandrel bent exhaust system, whoa...better stop...i just went back in time to car i wish i was able to still own today..haha

 

[Bobr]

Does Stinger have that "turbo whistle" sound noticeable btw?

 

[GuyManDude]

Not at all on my 2.0.

 

[Terra]

Does Stinger have that "turbo whistle" sound noticeable btw?

No turbo whistle........

 

[Corey @ K8 Stinger Store]

Does Stinger have that "turbo whistle" sound noticeable btw?

The way the Blow-off recirculating valve works, it sends the boost pressure back to the intake and therefore alleviates the famous turbo whistle sound. In order to get that sound, you would need to add an aftermarket blow-off valve. Send us an email to Sales@K5OptimaStore.com and we'll get you setup with what you need.

 

[Kazz]

I imagine an aftermarket intake will give you an audible "pssh" or "woosh" when you lift off the throttle abruptly after hard acceleration.

 

[Corey @ K8 Stinger Store]

I imagine an aftermarket intake will give you an audible "pssh" or "woosh" when you lift off the throttle abruptly after hard acceleration.

Not an intake. As the pressure is after the turbo and the intake is before. You would need the blow off valve on the charge pipe going to the intercooler.

 

[Kazz]

Yes, and the charge has to be relieved when you abruptly lift off of the accelerator. The pressured air gets routed into the intake side of the turbo in my previous experience.

 

[Corey @ K8 Stinger Store]

Yes, and the charge has to be relieved when you abruptly lift off of the accelerator. The pressured air gets routed into the intake side of the turbo in my previous experience.

I see what you’re saying. But if you plug that port on the intake and put a real blow off valve in you’ll get the true sound.

 

[Bwebb]

On my 15 Optima I was able to use just a plate between the pipe and bypass recirculating valve to “blow-off” to the outside instead of rerouting the air back into the intake. Not a true blow-off but allows the sound to be heard.

 

[Corey @ K8 Stinger Store]

On my 15 Optima I was able to use just a plate between the pipe and bypass recirculating valve to “blow-off” to the outside instead of rerouting the air back into the intake. Not a true blow-off but allows the sound to be heard.

Yeah, the blow off sound plate. That would work too if they make one for the Stinger. We will look into it.

 

[ballistic]

i was just reading about loud blow off valve type sounds with a k&n intake.

The K&N intake increased the throttle response and mid-range as claimed by K&N. I don't have a dyno handy but 9HP, as shown on the included Dyno sheet, seems accurate. Install was straightforward and easy. Intake noise has increased a bunch, especially before the waste gate shuts completely. Letting off the throttle under high boost you get Tokyo Drift levels of blow off valve. Hilarious fun. In my opinion it needs a nice exhaust system to balance it out. Combined with the Uncle piggyback chip it turned a pretty quick car into a testicle crushing kimchi cannon.

What did you do to your Kia Stinger today?

 

[Kazz]

I see what you’re saying. But if you plug that port on the intake and put a real blow off valve in you’ll get the true sound.

If you do that, then you're taking air that's been metered by the MAF and removing it from the system. That's why it's dumped into the intake instead of the atmosphere. This is called a diverter valve instead of a blow-off valve.

 

[Corey @ K8 Stinger Store]

If you do that, then you're taking air that's been metered by the MAF and removing it from the system. That's why it's dumped into the intake instead of the atmosphere. This is called a diverter valve instead of a blow-off valve.

These vehicles do not have MAFs, only MAPs. And it doesn’t affect the MAP because the blow off valve doesn’t open until there is a vacuum condition when the throttle is lifted. That’s when the pressure is released. Sending that pressure to the intake or to the atmosphere is no different. Both ways are just to prevent compressor surge.

 

[EchoesMyron]

Modern turbo systems 'recycle' boost back to the atmosphere side of the throttle plate when the throttle is closed. Older systems released the boost into the atmosphere because they lacked the ability to finely control some of the parameters needed to recycle. The recycling style of system doesn't have the blow off noise associated with it. The upside is that by recycling that boost it reduces lag. If you want to decrease the performance of your system in favor of a noise, you can. As for me, I won't.

Not all 'modifications' are what they seem. Many are fashion over function. Engineers have to balance a lot of variables and requirements when designing cars and the final product represents the best compromise for cost, performance, longevity, mpg, noise, usability, regulations, etc.

 

[Corey @ K8 Stinger Store]

Modern turbo systems 'recycle' boost back to the atmosphere side of the throttle plate when the throttle is closed. Older systems released the boost into the atmosphere because they lacked the ability to finely control some of the parameters needed to recycle. The recycling style of system doesn't have the blow off noise associated with it. The upside is that by recycling that boost it reduces lag. If you want to decrease the performance of your system in favor of a noise, you can. As for me, I won't.

Not all 'modifications' are what they seem. Many are fashion over function. Engineers have to balance a lot of variables and requirements when designing cars and the final product represents the best compromise for cost, performance, longevity, mpg, noise, usability, regulations, etc.

No performance is lost by venting the boost to the atmosphere. It's been done on the Optimas with the same exact setup for the past 8 years. The only reason they "recycle" the boost is to quiet engine noise and muffle the blow-off sound.

 

[EchoesMyron]

I guess we can respectfully agree to disagree. All the training and engineering material I've studied says otherwise but to each his own.

Regarding the Optima, I'm not sure whether you're referring to the stock setup or not. I had a '13 SXL (2.0T) and it didn't vent boost to atmosphere as far as I know...could be wrong.

 

[Corey @ K8 Stinger Store]

I guess we can respectfully agree to disagree. All the training and engineering material I've studied says otherwise but to each his own.

Regarding the Optima, I'm not sure whether you're referring to the stock setup or not. I had a '13 SXL (2.0T) and it didn't vent boost to atmosphere as far as I know...could be wrong.

That's what I have now. Stock it vented boost to the intake just like the Stinger. You can block the intake port and put a BOV on to vent to atmosphere.