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Had our customer @2018911TTS swing by with his 2020 992 Carrera so we could see how much power it's putting down. The car is otherwise factory and running an unleaded race gas mix for all runs. Overall really impressive delta stock vs. JB4 map2, and I dialed up boost on a custom map6 just to see how car we could take it on his race gas mix. I understand he will be coming back in a couple weeks with a few bolt on mods from @SamboTT@ByDesign@do88 performance that should help us reach that 450whp mark!
Does it have to drive with the engine cover open to get those numbers?
What kind of numbers, just on 93 octane and no other mods?
No, the engine cover was open because I was doing JB4 chip updates to the car and needed access to the JB4 itself and just left it open.
Map 2 is suitable for 93 octane so somewhere between 400-412whp as shown.
I would assume our baseline to be around the 350whp mark with regular 91 octane, so the delta would be greater vs what is shown now because of the racegas baseline.
The 350whp baseline is about what others tested on normal 91-93 octane gas. So, how difficult is the JB4 box install on these engines. On some of my previous car it was quite a hassle and I would not want to remove it for every service.
Had our customer @2018911TTS swing by with his 2020 992 Carrera so we could see how much power it's putting down. The car is otherwise factory and running an unleaded race gas mix for all runs. Overall really impressive delta stock vs. JB4 map2, and I dialed up boost on a custom map6 just to see how car we could take it on his race gas mix. I understand he will be coming back in a couple weeks with a few bolt on mods from @SamboTT@ByDesign@do88 performance that should help us reach that 450whp mark!
-Payam
If he/you have time and interest, can you pull some 0-60, 1/8mi, 1/4 mi and 80-130mph times? It’s nice to see how added power translates into quicker times? Thx.
The 350whp baseline is about what others tested on normal 91-93 octane gas. So, how difficult is the JB4 box install on these engines. On some of my previous car it was quite a hassle and I would not want to remove it for every service.
It's a bit tedious, but not impossible. I'll have the finalized install guide on our webpage soon. It' connects to the Tmap/map sensors. The one right before the throttle body is very simple once you remove the engine cover. The second one is on the intake manifold which is a bit tougher to get to. Otherwise, it's not too bad to get to.
Originally Posted by CodyBigdog
If he/you have time and interest, can you pull some 0-60, 1/8mi, 1/4 mi and 80-130mph times? It’s nice to see how added power translates into quicker times? Thx.
@2018911TTS Goes to the track very often and will be posting his time slips.
It's a bit tedious, but not impossible. I'll have the finalized install guide on our webpage soon. It' connects to the Tmap/map sensors. The one right before the throttle body is very simple once you remove the engine cover. The second one is on the intake manifold which is a bit tougher to get to. Otherwise, it's not too bad to get to.
@2018911TTS Goes to the track very often and will be posting his time slips.
What was the temps of the oil and water during the runs? Why STD and not SAE correction?
I don't see why the delta between 93 and race gas would be bigger with race gas. If the car makes more power base with the race gas, I'd be more than surprised if it did not also do that when on the tune.
What was the temps of the oil and water during the runs? Why STD and not SAE correction?
I don't see why the delta between 93 and race gas would be bigger with race gas. If the car makes more power base with the race gas, I'd be more than surprised if it did not also do that when on the tune.
From what I remember oil and water temps were in 210F range when doing these runs. We did lots of back to back runs on each map to make sure it was consistent even with some heat soaking.
SAE will put a correction factor based on certain temps, altitude, etc within the dynojet program. STD is what the car put down at that specific moment which is why we use it.
The delta will be more with pump gas vs racegas as a baseline. You will have lower numbers with 91 octane vs 100 octane even with stock tuning.
The delta will be more with pump gas vs racegas as a baseline. You will have lower numbers with 91 octane vs 100 octane even with stock tuning.
-Payam
Yes I understand that, but I'd also think that the tuned number would be lower on 93. Seems odd to me that you can tune it to 412 w_hp on gas and keep it there on 93, but the stock tune will make more power on gas than on 93.
Yes I understand that, but I'd also think that the tuned number would be lower on 93. Seems odd to me that you can tune it to 412 w_hp on gas and keep it there on 93, but the stock tune will make more power on gas than on 93.
I stated somewhere between 400-412whp on 93 octane. We have seen some 93 octane numbers to be very strong vs horrible CA 91. I'll reach out to some customers and see if they have any dyno results on map 2 with 93 octane to post up.
SAE will put a correction factor based on certain temps, altitude, etc within the dynojet program. STD is what the car put down at that specific moment which is why we use it.
-Payam
STD is also a correction factor. It's just less conservative than SAE J1349. If you want the number that day in that time, it should be uncorrected. I just like SAE because it is more in line with OEM date. Many tubers like STD because it gives a higher reading than SAE.
STD is also a correction factor. It's just less conservative than SAE J1349. If you want the number that day in that time, it should be uncorrected. I just like SAE because it is more in line with OEM date. Many tubers like STD because it gives a higher reading than SAE.
Sure, whatever numbers you like to see. The delta is the main point we're looking at in terms of tuning and gains. SAE as you wish:
05-03-2022, 03:51 PM
JB4 Dynojet Results 2020 992 Carrera
