PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Tuning for a 200 shot??

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Old Aug 14, 2005 | 04:28 PM
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Default Tuning for a 200 shot??

I have been running a 150 shot and want to step it up. I have a 98 with stock internals and I have hptuners. I am about to order a fuel pump and was wondering what tuning I needed to do for this?
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Old Aug 14, 2005 | 04:56 PM
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What do you plan to run for gas? Your going to want to hold the timing back to about 22 degrees if you want to try it on straight pump gas. If you plan to mix in some race gas you can up it to 24+ depending on the gas. Just make sure the car is getting plenty of fuel, I hold my A/F ratio at about 11.0-11.2.
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Old Aug 14, 2005 | 07:23 PM
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Yeah I was planning on running pump gas. So the timing needs to be around 22 through the duration of the nitrous run?
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Old Aug 14, 2005 | 08:49 PM
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Yeah, I would hold it at 22* and make a partial pass while logging.
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Old Aug 14, 2005 | 10:10 PM
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One other thing is that the car has been tuned but not tuned for gas...is that gonna be a problem? The afr on the dyno during tuning stayed around 12.3
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Old Aug 14, 2005 | 10:17 PM
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Do you have a wideband in the car? If not get her back on the dyno and see what your A/F is when you spray it and if need be start swapping out jets until you get your desired A/F.

Matt
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