When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Can't really rely on the data unless you have prior data to compare it to in the same barometric pressure/temperature range. You can have a boost leak and still hit the boost target, and not have a leak and not hit it, just depends on the situation.
You'll want to compare wastegate duty cycle and see how hard it is having to work through a pull to reach the boost it is running and to maintain the boost through the rev range. Higher wastegate duty cycle means working harder, so could be compensating for a leak.... but it could be compensating for different conditions too, which is why you need previous data.
Can't really rely on the data unless you have prior data to compare it to in the same barometric pressure/temperature range. You can have a boost leak and still hit the boost target, and not have a leak and not hit it, just depends on the situation.
You'll want to compare wastegate duty cycle and see how hard it is having to work through a pull to reach the boost it is running and to maintain the boost through the rev range. Higher wastegate duty cycle means working harder, so could be compensating for a leak.... but it could be compensating for different conditions too, which is why you need previous data.
Thank you. I would like to do this sort of thing as a 'lite diagnostic' and not rely on it entirely a true boost leak test. So basically once I can confirm my car has no boost leaks I can do some pulls then compare it going forward (with similar weather conditions)
Thank you. I would like to do this sort of thing as a 'lite diagnostic' and not rely on it entirely a true boost leak test. So basically once I can confirm my car has no boost leaks I can do some pulls then compare it going forward (with similar weather conditions)
Yes. Once you have a confirmed good setup and log it in a few different conditions you'll get an idea what a normal fluctuation is and can infer things even if you don't have an exact comparison.
If you have a boost leak major enough to worry about, you'll know it before you look at the data anyway in my experience.
Yes. Once you have a confirmed good setup and log it in a few different conditions you'll get an idea what a normal fluctuation is and can infer things even if you don't have an exact comparison.
If you have a boost leak major enough to worry about, you'll know it before you look at the data anyway in my experience.
Kind of a strange question but is there a particular vacuum hose/fitting that is easily accessible from the top of the engine that I could unplug to simulate a boost leak?
Kind of a strange question but is there a particular vacuum hose/fitting that is easily accessible from the top of the engine that I could unplug to simulate a boost leak?
Pop the intercooler hose out of the y-pipe would create a very noticeable one.
Been a while since I looked over the stock vacuum routing. If you wanted to pulll a small vacuum hose just make sure it isn't the one to the N75 valve/wastegate solenoid or the fuel pressure regulator reference line.
If you're stilll running a MAF any attempt to simulate a noticeable boost leak is going to make the car run really poorly.
So I've been reading this thread on the 997 section,where folks are describing what they did to their 997's on a particular day. From just admiring the car in their garage after washing it to upgrades,mods,regular maintenance or an interesting/funny episode that happened with them and their cars.
I wanted to contribute too,only the problem is I don't own a 997,I own a 996TT.
So I was wondering,why not have something like that here?
Pics welcome.
Mine's just been sitting in the garage since Sunday.
01-30-2024, 12:22 PM
