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Got to Uprev yesterday to get retuned for my Brian Crower Stage 2 cams. As you can see from my results, they are lower than expected. But that's life & I'm Ok with it. 12whp peak, though several points had 15whp+ and up to 17ftlbs gains in places. So I still got some gains from the cams, especially the upper end. Plus I know my truck runs great & sounds great. It feels great driving around town and I'm sure I will see some gains next trip to the track.
I had a pretty good time visiting Uprev again. They ran the piss out of my truck for this retune. I think we had a total of 27 dyno pulls before we were done. Couple of things they did besides the tune itself was bumping my idle up to about 730rpms and raised my rev limiter to 6800rpms. They also removed my random misfire ses code that the cams were creating.
Also I thing I must note. First thing guys I'm just learning here about dynoes, so bare with me. Apparently the local guys I went to about 9 months ago to get dynoed after swapping my flowmaster for magnaflows were crappy at their job. Or a little shady with their dyno. Anyway my numbers from that local dyno shop were 263hp/286ftlbs. And that was BEFORE my cams. I was pretty shocked when Uprev got me on the dyno yesterday and based lined 250hp/270ftlbs WITH my cams. Well I research now and see for one thing the local shop used "std" correcting factors vs "sae" correcting factors like Uprev and most other reputable shops use. So between the std vs sae issue and I guess the local shops basically "generous" dyno, I couldn't even match those numbers with my final tuned runs. So I guess I will stay with Uprev for any more dynoes. Plus the cool thing about that is they keep all of my runs on file. They were able to dig up some of my old runs so I could get some nice comparisons over the last year of mods.
So a few notes before my graph.
I didn't show it here, but I did actually lose a slight amount power at some places and at some points were slightly better with my cams before my retune. Overall it was down though I would say. But for certain, anybody else who decides to get camshafts, you WILL need a custom tune.
Also a note about the tapering off on the highends of the graph. My no tune baseline had the factory speed limit of 112mph and is why it stopped the shortest, the precam tune had the factory 6250rpm rev limiter and was hitting it at about 119mph, and the final tune had the new 6800rpms rev limit which allowed my truck to redline at about 129mph on the dyno. Pretty cool standing beside my truck screaming at 6800rpms and the wheels going 129mph
. I wont usually bring it that far but from the graphs and and from driving it around today, I'll shift around 6300-6400rpms.
THE DYNOGRAPH PULLS-----------------------------------------------
NO TUNE BASELINE-I had basically all my current mods except no camshafts(also had a flowmaster instead of current magnaflows), plus NO TUNE AT ALL. Done 1-10-2009.
PRE-CAM BASELINE-Same as above but with UPREV TUNE. Done 1-10-2009
CAM FINAL TUNE-Cams added (plus magnaflows instead of flowmasters). AND UPREV RETUNED FOR CAMS. Done 1-16-2010.
I had a pretty good time visiting Uprev again. They ran the piss out of my truck for this retune. I think we had a total of 27 dyno pulls before we were done. Couple of things they did besides the tune itself was bumping my idle up to about 730rpms and raised my rev limiter to 6800rpms. They also removed my random misfire ses code that the cams were creating.
Also I thing I must note. First thing guys I'm just learning here about dynoes, so bare with me. Apparently the local guys I went to about 9 months ago to get dynoed after swapping my flowmaster for magnaflows were crappy at their job. Or a little shady with their dyno. Anyway my numbers from that local dyno shop were 263hp/286ftlbs. And that was BEFORE my cams. I was pretty shocked when Uprev got me on the dyno yesterday and based lined 250hp/270ftlbs WITH my cams. Well I research now and see for one thing the local shop used "std" correcting factors vs "sae" correcting factors like Uprev and most other reputable shops use. So between the std vs sae issue and I guess the local shops basically "generous" dyno, I couldn't even match those numbers with my final tuned runs. So I guess I will stay with Uprev for any more dynoes. Plus the cool thing about that is they keep all of my runs on file. They were able to dig up some of my old runs so I could get some nice comparisons over the last year of mods.
So a few notes before my graph.
I didn't show it here, but I did actually lose a slight amount power at some places and at some points were slightly better with my cams before my retune. Overall it was down though I would say. But for certain, anybody else who decides to get camshafts, you WILL need a custom tune.
Also a note about the tapering off on the highends of the graph. My no tune baseline had the factory speed limit of 112mph and is why it stopped the shortest, the precam tune had the factory 6250rpm rev limiter and was hitting it at about 119mph, and the final tune had the new 6800rpms rev limit which allowed my truck to redline at about 129mph on the dyno. Pretty cool standing beside my truck screaming at 6800rpms and the wheels going 129mph
THE DYNOGRAPH PULLS-----------------------------------------------
NO TUNE BASELINE-I had basically all my current mods except no camshafts(also had a flowmaster instead of current magnaflows), plus NO TUNE AT ALL. Done 1-10-2009.
PRE-CAM BASELINE-Same as above but with UPREV TUNE. Done 1-10-2009
CAM FINAL TUNE-Cams added (plus magnaflows instead of flowmasters). AND UPREV RETUNED FOR CAMS. Done 1-16-2010.
