Repost for weekday crowd: APR stg 2+ before and after tweaks ...
04-11-2005, 09:54 AM
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Repost for weekday crowd: APR stg 2+ before and after tweaks ...
Base Run and Test run are swapped by accident when i went back to print out the comparison report...the Actual Base Run is 169 whp and after tweaks was 221 whp. Look at the times during the run.
<img src="http://members.aol.com/audis4guy/APRstg2pls.jpg">
91 Octane ~68 degrees. My Stg2+ with AMS - no tweaks, made 194 whp and 275 tq on the same DYNO. I'm sure everyone who's been keeping up with my test knows by now that this particular dyno reads pretty damn low. We were able to get more power out of adding timing as well, unlike my AMS where I got more power by retarding timing...this is probably because AMS's timing map is far more aggressive than APR's. Kudos to APR on their A/F ratio...without any tweaks the A/F was very flat and they made sure the car sat on 12.5:1 (supposedly that ratio makes most tq) throughout our dyno run but as I've said before all cars are different and all S4's I've dyno'd so far likes to run a bit richer than 12:5.1 We only made changes to primary since A/F was already flat.
Again, we made sure EGT's and CF's were within our specs...car is actually safer to push now than before without tweaks. APR is weaksauce, no wonder I was getting smoked by E46's when I had their software, even the TAP chip I tested had more HP!!! You can see my sig for all tests i've done so far. Still trying to get my hands on Giac X and XR chip for more tests...If anyone in the area is willing to let me borrow their A Box ECU with X chip please email me. I'd rather do all of these tests on my car so we can eliminate "but it was done on a different car" factor. Please don't assume that these settings will do the same for you as all cars are different. I take no responsiblity should your engine blow up (even though theres no way really with these weaksauce settings =)<ul><li><a href="https://forums.audiworld.com/s4/msgs/1963732.phtml">Link to original post</a></li></ul>
<img src="http://members.aol.com/audis4guy/APRstg2pls.jpg">
91 Octane ~68 degrees. My Stg2+ with AMS - no tweaks, made 194 whp and 275 tq on the same DYNO. I'm sure everyone who's been keeping up with my test knows by now that this particular dyno reads pretty damn low. We were able to get more power out of adding timing as well, unlike my AMS where I got more power by retarding timing...this is probably because AMS's timing map is far more aggressive than APR's. Kudos to APR on their A/F ratio...without any tweaks the A/F was very flat and they made sure the car sat on 12.5:1 (supposedly that ratio makes most tq) throughout our dyno run but as I've said before all cars are different and all S4's I've dyno'd so far likes to run a bit richer than 12:5.1 We only made changes to primary since A/F was already flat.
Again, we made sure EGT's and CF's were within our specs...car is actually safer to push now than before without tweaks. APR is weaksauce, no wonder I was getting smoked by E46's when I had their software, even the TAP chip I tested had more HP!!! You can see my sig for all tests i've done so far. Still trying to get my hands on Giac X and XR chip for more tests...If anyone in the area is willing to let me borrow their A Box ECU with X chip please email me. I'd rather do all of these tests on my car so we can eliminate "but it was done on a different car" factor. Please don't assume that these settings will do the same for you as all cars are different. I take no responsiblity should your engine blow up (even though theres no way really with these weaksauce settings =)<ul><li><a href="https://forums.audiworld.com/s4/msgs/1963732.phtml">Link to original post</a></li></ul>
