10-11-2008, 07:53 PM #1
ran the ET 137 wheel with 42s and RR ECU
I have been fighting a rich bottom/mid on my ski since the installation of the ET137 wheel and 3mm spacer. So today I ran some 42 injectors in place of the 48 injectors I have run previously with the ET wheel. I found that with the fuel pressure turned way up (78lbs) on RRFPR I was not able to get my AFR below 13.3 at 8500 rpms. The bottom and mid was not as rich but the idle was all over the place, jumping from 1500-2000 rpms. Reinstalled 48s and dialed back the fuel pressure to mid 50s and idle was smoothed and AFR on top came back into the 12s, with rpms at 8500.
Temp was 81 degrees.
SEtup - RR ECU, racetech ported head, RRFPR, gutted waterbox, 48 lb injectors, riva IC, riva rear air, 48 lb injectors, thru hull exhaust with gutted waterbox.
Next thing I will try to get the AFR improved throughout rev range is a RRFPR with a better than 1:1 boost to fuel pressure increase.
10-11-2008, 07:56 PM #2
Good information! Sorry for the OT but did a piece of hair move out of place?
10-11-2008, 08:08 PM #3
10-11-2008, 08:40 PM #4
- Join Date
- Dec 2006
- Crest Hill, IL
You riding with us tomorrow? if so, bring that AF gauge...I want to check my setup!!!
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