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Old Jun 25, 2012 | 07:53 PM
  #62 (permalink)  
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velociabstract
Senior Member
Joined: Jul 2008
Posts: 4,525
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From: Puerto Rico
Default Re: Going to inject it with water/xxx

I'm using the washer bottle with the pump mounted in the space below in the rocker. It's completely hidden unless you know what to look for and even then it's hard to identify. This is how the events have unfolded. After the Needswings manifolds were installed I had a dyno done (approx 340 hp) and the AFR's were a little lean. Having only a few days before the march 1/2 mile I filled the car with 104 octane and didn't worry, much. After the event, looking at the data logs, the AFR's were in the low 13's at the top of 3rd. Got a retune and dyno and the AFR's were in the 14's. Don't ask me why. Another retune and dyno, in the mid 13's. Another retune which felt weak but I didn't do a dyno, just parked the car for a week. Installed the water meth, had a dyno and lost 50 hp and was super rich. Sprayed with water and then with a mixture on the dyno without much gain. I think the best of the day was just over 300 hp while the prior dynos were all between 340 and 359 hp. Pulled the plugs, changed the manifold gaskets, made sure the engine was healthy. Logged a track day and the AFR's were in the upper 9's on water meth. Switched to distilled water. Still super rich. Had the tune in the mid 13's reinstalled, no dyno, added 2 pints of alcohol to the water and ran the 1/2 mile event yesterday. AFR's in the low to mid 12's. I'll be headed back to the dyno this week to see where I'm at and play with the spray some more. Last week I had to buy a PC. I've been depending on a friend with a computer, tuning cable and a new baby which was making retunes difficult to schedule. Now I can schedule retunes much easier and perhaps will make some progress with the spray.

Les
 
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