tr 224 112lsa
And yeah, without a proper tune your car will never run right, and on top of that, you are also leaving a lot of HP untapped. Get it tuned and it will run almost like stock and you will gain at least 20 rwhp.
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Part of a good cams power gain is more area under the curve. Without tuning you'll miss some of the area and overall gain.
Long time ago when we did my H&C, another car did almost he same H&C package. We had different headers. I had tuning & he didn't. Our peak numbers were pretty close but my car made as much as 20 to 30 rwhp and rwtq more in some places on the graph. A big part of that difference was the tuning.
My car was much better mannered again due to the tune.
Gas mileage will also be better with tune.
Likewise, your car is probably running to rich without the tune in daily driving. Long term this isn't a good thing.
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