I am curious to know how much power people have made reliably out of a OEM d code engine ? I tuned Rob's the other day, and we are considering going back for the 1000rwhp mark. ( Ran out of time, race gas and the dyno got too hot on this session ). There seems to be a lot of controversy near this power mark on an oem build. Looking for first hand information here...

 

damn rob got some very nice numbers

 

your not going to last long making 800 on the stock exhaust sleeves

 

? I made 10 pulls near and past the 800rwhp mark and we just did the 1/2 mile without a single issue.
If there was an issue I would think the water temp at least would show it. Oil temp we're good too.

 

everything i was ever told about a 20b was thats the 1st thing take out when i talked to dave over at mazdatrix, ihor at it performance and a few others

 

we made 916 whp on a pretty stock 20b with a precision 7675 gen2 .

check forcefedracing's website for the video.

 

whats pretty stock

 

A little update for those who are interested;

Same block now making 928rwhp;

Going for more tomorrow, curious to see what breaks first.

 

Have not seen any issues with 1000rwhp on the 20b.

 

What's reliable? Certainly lasting a few dyno pulls and going 1/2 miles ain't it. I ran 700whp hard for about 10k miles on 91octane before a bad tune threw a side seal. It's D code, but mine has aftermarket shaft. Rotors and housings were pristine inside when taken apart. Given already a low number of 20b owners, different type of fuels being used, aux injection, and even selected number running C or D code, I'm not sure we have more than a few data point here. But that's mine! 10k hard miles on 91 octane running ~700whp before a bad tune threw side seal. I really think it would've lasted another 70k if I didn't change the tune on it when going with new ECU. The most it made was tad over 800whp on 93 octane but I set it lower when I moved out to the west. Will be following others' responses. Thanks for the question.