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Old 04-20-2019, 10:17 AM   #1226
thstone
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
Data, data, data!

I had my car dyno tested again at the PCA Festival of Speed. This was a different dyno but both were the same manufacturer, same software, and same environmental condition algorithms.

The results are within range of 8 hp and an average of 4hp.

Test 2:
High 193.53
Low 190.45
Ave 191.93

Test 1:
High 189.51
Low 185.75
Ave 187.85

I still think that this is a bit lower than the expected ~195hp ave. If you look at the A/F ratio from the second test (top image above), it shows that the engine is running a bit lean. This implies that the cylinders aren't getting enough fuel. I had the fuel pump tested which was fine.

Then we pulled the injectors and sent them out for test with results of low flow rates in 3 cyls. This might be the cause of the lean condition so we had them cleaned and calibrated.

I'll get another dyno test to see if the injector cleaning made any difference as soon as the opportunity presents itself.






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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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