GMR 113 build- 10.8-1 coated pistons, GMR 600 cam, GMR porting and headwork (CCP at 215), SE 58mm TB with 5.3 injectors, SE Heavy Breather, Fullsac DX and CVO mufflers with 2" Fullsac cores.
Tuned by my tuner Dave Stoddart at Mt Pocono HD.
After getting opinions on a thread I posted, I thought I could get away with using my ceramic coated catless 2009 headpipe and my Rinehart 4" mufflers, which I really wanted to hang on to. I thought if I used my DX with the Rineharts, I wouldn't have enough back pressure for good low end torque.
I took it down to Dave 2 weeks ago with that exhaust combo. Long story short, after a full day of tuning it was giving him fits. Totally dead bottom end torque due to the timing adjustments he had to make. So, I left him the bike and went home. I mailed him my DX pipe that I should have brought with me (I brought my 2" Fullac cored mufflers the first trip and left them with him), so he installed the DX, and rather than have him experiment with the Rineharts, I told him to just install the Fullsac mufflers, since the results of that exhaust combo was pretty much guaranteed.
Tuning issues went away, and it looks like good results, although I thought the charts I've seen Steve (GMR) post with his 600 cam, the torque was a bit higher down low.
Haven't really taken it for a good ride yet- plan to on Tuesday, but the chart/curves look good I think. His dyno is a bit stingy, so I figure the numbers are probably a few points higher, but I don't care about that anyhow.
Initial thoughts are that the Fullsac's are too quiet for me, as I remember them being when they were on the bike when I first bought it in 2010, but I'll give them a chance and see if I can get used to their politeness, lol.
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Topic: GMR 113" BUILD AND TUNE RESULTS (Read 7121 times)