J&S Sensitivity?

[RStoR]

My roommate's '00 turbo ITR is up and running now. Just finished the maiden voyage! We were playing with the J&S sensitivity adjustment and have a question. The J&S was set to "retard all" and the sensitivity to "midrange" par J&S instructions. The Tial has a 6 psi spring in it and the XS manual boost controller was turned all the way down. Ignition timing was set as 16 deg. When we floor it, the boost climbs to about 2-3 psi max. At approx 5000, some retard starts, maybe 2-3 lights, so 4-6 degrees. When VTEC transition happens, the thing goes crazy and fully retards, 10 lights (20 deg), and you physically feel the car slow. The A/F meter is still rich and hasn't budged. Is the sensitivty set too high or are we actually knocking that much? Reminder, this is only at 2-3 psi. Second question, in "retard all" mode, during partial throttle will all lights stay lit in a row if knocking is detected? We are going out to finish installing the fuel pressure gauge right now. Please help?

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Chris Blake
Raleigh, NC
00 PY #510
www.itr-nc.com

[JerseySCSI]

RStoR, it sound like you have teh sensitivity set to0 high. Your going to have to re-adjust that otherwise your going to get alot of false alarms. The consenus on clubsi.com board is to set it at either 11:00 or the 10:30 position. On my car 10:30 works best. So just play with it a bit, but don't blow anything up

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2000 Si
6 psi SC
190 whp 136 tq

[RStoR]

Thanks for the info. I know we have it set too high, but as you stated, "I don't want to blow anything up." We played with it a bit more last night and it were able to take it up to around 7k before he started to lean some. Hopefully, he'll be on the dyno within the next 7 days. Thanks again.

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Chris Blake
Raleigh, NC
00 PY #510
www.itr-nc.com

[Holden]

I have mine below 9 O'Clock. 8:30 or so.

It still picks things up at the appropriate situations. No audible detonation ever.

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Greg Holden
96 GSR, JSRC @10psi, All the Goodies!
Best 1/4 ==> 13.556 @ 105.29mph
My JRSC Install Site