F1C Forged 347 Build. DYno tonight 9/10 NUMBERS Finally
09-06-2012, 08:15 AM
#181
I could see it being the case. Think of it this way, during a 'burnout' the rpms rise very quickly, and so does the boost thanks to boost being directly related to engine rpm. But exhaust is like a liquid, and since nothing is pushing or pulling it out, it gets stacked up. So I can beleive that the boost went that high.
Try this, try to do a pull without lighting up the tires. It might be tough on the street considering speeds, but on a dyno, you should be able to spin up 4th gear without spinning and see realistic numbers.
Just a theory, I might be off base, hopefully someone else can chime in.
09-06-2012, 08:25 AM
#182
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Considering you're only filling 347 cubic inches vs. most people running F1's are filling bigger cube motors. What exhaust is on the car?
I could see it being the case. Think of it this way, during a 'burnout' the rpms rise very quickly, and so does the boost thanks to boost being directly related to engine rpm. But exhaust is like a liquid, and since nothing is pushing or pulling it out, it gets stacked up. So I can beleive that the boost went that high.
Try this, try to do a pull without lighting up the tires. It might be tough on the street considering speeds, but on a dyno, you should be able to spin up 4th gear without spinning and see realistic numbers.
Just a theory, I might be off base, hopefully someone else can chime in.
I could see it being the case. Think of it this way, during a 'burnout' the rpms rise very quickly, and so does the boost thanks to boost being directly related to engine rpm. But exhaust is like a liquid, and since nothing is pushing or pulling it out, it gets stacked up. So I can beleive that the boost went that high.
Try this, try to do a pull without lighting up the tires. It might be tough on the street considering speeds, but on a dyno, you should be able to spin up 4th gear without spinning and see realistic numbers.
Just a theory, I might be off base, hopefully someone else can chime in.
09-06-2012, 09:31 AM
#189
Exactly. I had a similar issue when I installed my 2-bar map, and I had a 2-bar OS, but my data logger wasn't setup correctly and the PID was still for a 1-bar map sensor. I couldn't figure out why I wasn't seeing any more than 105kpa, even though I KNEW it was making a lot more boost than that as I could hear the blow off valve releasing the pressure as soon as I lifted.
09-07-2012, 09:57 AM
#196
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Just my luck. Dyno was hit by lighting and what not this morning. DYno is toast and mustang dyno is bringing out a new one. Wideband setup and the computer all toast. Looks like i wait longer for numbers.
