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<p>[QUOTE=&quot;Diesel Dave, post: 11871005, member: 37930&quot;]The tuner I knew at the time(RIP) was pretty sharp. He wanted send out the pistons to get ceramic coated when the time came to do an inframe. The HT4 I guess for my era at the time was the HT 4. But a lot has changed since back then. According to the fuel pump shop, the rail pressure was supposed to be over 300. It ran great and had Calibrate to it wouldn’t smoke alot when I mashed on it. It was within they had started using the sniffers for smoke opacity test. We are talking about over 25 years ago. If the ceramic coated pistons would of been done, I’m sure he would of told the shop to and him a fuel pump and different injectors to get more HP. Also he talk about backing off the top stop of the injectors when he adjusted them. He said I was more precise.[/QUOTE]</p><p><br /></p>

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