Old Jan 17, 2014 | 01:03 PM
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RL67037
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Joined: Apr 2012
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From: Kansas, USA
Default Re: Dyno results of ic pump failure before/after

Originally Posted by Da55id
As promised, I went to Eurocharged in DC today and did a dyno run on the car with the new BOSCH 010 series Intercooler pump installed with no other changes from the earilier dyno run done with the dead pump.

The previous dyno run peak was 305 whp. Today, on a much colder and less humid day, the dyno showed 321 whp, a difference of 16 whp. Of note, is that the test was run from a cold start in the winter. I interpret this result to show that even in the absolute best conditions for the intercooler a dead pump will lose 16 whp. Once the car heats up, it would no doubt kill additional 10s of whp, and in the summer we all know that a dead IC pump will kill performance entirely perhaps a drop of 80 or more whp? Others might be better qualified to estimate this... OF VASTLY greater importance, the previous peak torque with the dead IC pump was 295 and post IC pump replacement was 327, a gain of 32 max torque. Peak torque came in at 2500 rpm with the new pump vs 3800 rpm with the dead IC pump.

After performing this apples to apples dyno test (same dyno, same tech, same setup, humidity was 12% on today's run vs 23% on dead pump run), I had a Needswings SCAI installed, and the final dyno result was 340 whp. Again, max torque of 339 came on strong 1k rpm earlier.
I'm liking what you're doing - step by step results. Although all cars will differ somewhat, it gives some good info on where one might get the biggest bang for the buck using real numbers and not just "seat of the pants" feel.

I already replaced the IC pump with the 010 Bosch but I have no other mods. I just did a EC tune but haven't driven it enough to get a feel for what that did. My early sense was that it still "feels" the same. That said, it is not my daily driver so whenever I get to drive it, it feels awesome, I just don't have any consistent time behind the wheel to really know the car.

Keep up the good work and keep the info coming - guys like me like to see this

RL
 
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