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spike98 spike98 is offline
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Default Boost Leak? Logs included - 05-15-2021, 01:25 PM

2020 C43 with Petro 94. Installed the JB4 with BCM module. Ran 0-60 and 1/4mi times with the onboard computer both stock and running map 1 and 2. No decrease in time and butt dyno confirms. Car is runs 0-60 in over 5 seconds.

The turbo noise (woosh noise) increases with maps but it seems like its falling flat. The logs seem to show boost tapering off to almost stock by the upper RPM. Thoughts?

Log of map 1 and 2 attached.
Attached Files
File Type: csv Petro 94 P53_M1_R1.csv (10.1 KB, 51 views)
File Type: csv Petro 94 P53_M2_R1.csv (9.8 KB, 59 views)
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Default 05-17-2021, 11:52 AM

Looks clean to me and boost is hitting the additive target.

Can you upload a log with all 3 maps for comparison?




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spike98 spike98 is offline
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Default 05-17-2021, 12:09 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
Looks clean to me and boost is hitting the additive target.

Can you upload a log with all 3 maps for comparison?

Will do.

I can say for certain that i did have a boost leak. Lost connection where the IC meets the intake manifold. Upgraded the clamps to T-bolt style and it pulls like a freight train.

Im interested in feedback still on the new logs that i will upload shortly.
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Default 05-26-2021, 10:21 AM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
Looks clean to me and boost is hitting the additive target.

Can you upload a log with all 3 maps for comparison?

Here you go! 4 Maps 0 through 3.
Attached Files
File Type: csv P53_M0_R4_210517_1358 2.csv (24.3 KB, 59 views)
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Default 05-26-2021, 10:47 AM

On map 0 your stock boost falls off to about 10psi. On subsequent maps that the ECU psi is dropping so it's offsetting some of your additive but still see pretty good gains. Timing still looks good, how does a log on map 4 look?



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Default 05-26-2021, 12:43 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
On map 0 your stock boost falls off to about 10psi. On subsequent maps that the ECU psi is dropping so it's offsetting some of your additive but still see pretty good gains. Timing still looks good, how does a log on map 4 look?
Map 4 attached

Are the turbos running out of steam at the higher RPM range? What about the throttle not reaching 100% until 4500rpm?
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File Type: csv P53_M4_R1_210526_121130.csv (8.9 KB, 50 views)
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Default 05-27-2021, 09:57 AM

So far you're holding the requested boost. Throttle closure is pretty minor...I wouldn't worry about it in that particular log.



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