TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

timing question

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Old Apr 28, 2002 | 02:30 AM
  #1  
r90camarors's Avatar
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Joined: Dec 2001
Posts: 1,418
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From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
timing question

Hi everybody. I've seen a lot of posts on timing here lately, and most tend toward a 4* to 8* advance with a stock chip.
Well, I was one of those unlucky people that wasted $120 on the Thermomaster chip from Hypertech. Anyways, I know that the chip is supposed to advance the timing more than that of the stock chip, so I was wondering if it would even be worth it for me to play around with my base timing. I'm not sure what the advance goes to with the chip, I think I read 30* w/ the stock, so I would assume around 36* or so w/ the Hypertech. Anyways, any comments would be helpful. Thank you in advance, Roy

Last edited by r90camarors; Apr 28, 2002 at 02:32 AM.
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Old Apr 28, 2002 | 02:12 PM
  #2  
NJ SPEEDER's Avatar
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From: Ewing, NJ
teh hypertech chip does not change your timing at all. it enriches the fuel a little, and very littel at that.
your factory timing will get intot he 30degree range some times, but not too often. you shoudl advance the base timing to 4 or 6 degrees and see a difference in performance. the timing table is so conservative that the car will not knock before the table runs otu of advance unless you are running crappy gas.

later
tim
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