screaming eagle 103 stage 4
#22
05-22-2012, 11:44 PM
Just had a 103 stage 4 race kit put on my 2007 sg. I allready had a thundermax ecm on the bike. The 103 kit included the 58mm tb with high flow injectors. The bike rips unbelievable throttle response, just blipping the throttle results in a hard powerful surge of instant smooth power! Best $ 3800 I ever spent. Here is my problem the bike stumbles and pops during warm up once warm it run great althought the idle fluxuates a little. I called thundermax sent them a download of the bike and they told me that the 58mm tb was to blame for the poor cold performance stating the tb throttle plate shaft has to much play. Anyone have this set up or have a similar situation? Gregg
#23
05-23-2012, 12:04 AM
The current stage IV kit has 259 cams and the CNC ported factory heads (bathtub) with 1.875 intake valves. You're thinking of the old kit with the 260 cams and the 110+ heads. The new kit is much more streetable, especially in a touring bike.
#24
05-24-2012, 11:34 AM
And it is very streetable.. I have spent hours over the last several days toying with some adjustments on the IAC didn't do much. I was wondering if its a timing issue, the bike never pings wondering if its slighly retarded, or does the ecm take care of timing? It seems that after I remapped it lost some of its kick. Maybe I have to let the autotune do its job, I have only ridden it 10 miles since the remap and i had over 500 miles on the last map.
#25
05-24-2012, 11:44 AM
Grand HDF Member
#26
05-26-2012, 03:37 AM
Tourer
#27
05-26-2012, 05:55 AM
To the OP, get a new base map.
Also, TTS has several base maps for stage 4 103 engines and with different cams.
My build this winter will be a 103 with 11 to 1 pistons, MVA heads, ported 50mm TB, 4.3 injectors, 260 cams, plugged welded and balanced crank, gutted stock head pipe with 2" baffles in stock cans.
The 260 cams are very streetable if you have the proper base map.
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