dynoed my car today
Dynoed the car today
Dyno Jet dyno 12 psi. 324hp and 309 torque 11.8 AFR 14.5 psi 334hp and 317 torque 12.5 AFR 16 psi 341hp and 319 torque. 12.8 AFR(let out of it) check sign for mods. |
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very nice what mods ? no sig
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do you have a pic of your engine bay. I'm about to get the greddy FMIC,but have a blitz intake. I'd like to see how you have your intake
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any fuel upgrades? are you running a ported motor? are you controlling boost with just the pettit ECU?
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I can take a pic tomorrow, The intakes are really tight.
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supra fuel pump, boost control via needle valves. stock reman.
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very nice. are you maxing out your stock injectors?
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in your sig it says "best track time 8.19 @ 86mph".... what distance was that, im guessing 1/8 of a mile?
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Originally posted by mazdaspeed00 very nice. are you maxing out your stock injectors? |
its 1/8 mile. no way u can run a 8.19 with a trap speed of 86mph :)
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Originally posted by SNracing in your sig it says "best track time 8.19 @ 86mph".... what distance was that, im guessing 1/8 of a mile? |
Good stuff oakridgerx7! :bigthumb:
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Would you post your dyno charts including the AFR portion?
thanks a bunch |
Re: dynoed my car today
Originally posted by oakridgerx7 Dynoed the car today Dyno Jet dyno 12 psi. 324hp and 309 torque 11.8 AFR 14.5 psi 334hp and 317 torque 12.5 AFR 16 psi 341hp and 319 torque. 12.8 AFR(let out of it) check sign for mods. |
Re: Re: dynoed my car today
Originally posted by patriick Nice numbers at 12psi, especially for a non-ported motor. What were the conditions? (temps, correction factor, 18" wheels?, etc) Ive been trying to download the dyno chart, but the file is too big, I will have to try to get it hosted somewhere. I can e mail it to you though. |
dyno chart finally
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anyone know why my power drops so quickly after 7k?
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actually...
Originally posted by mazdaspeed00 its 1/8 mile. no way u can run a 8.19 with a trap speed of 86mph :) |
on the 14 and 16 psi runs, your in the blow the engine range for the A/F. I'd keep it at 12 for now.
Tim |
Only one question guys, is this rear-wheel or flywheel HP?
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nice numbers
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rwhp on the dyno.
was the boost stable during the run? If it's dropping off, then the HP would too. Tim |
boost was stable until redline, I guess the turbos just lost their efficiency
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okay, looks like its the ecu mapping that is killing your top end. First, I'd add some fuel, if possible (S-AFC) from 5500 to 7000 RPMS. Then the drop off after that is due to the extremely rich mapping, 10.0 to 1 it looks like from 7K to redline. The engines greatest stress is leading up to peak torque. That looks like its 11.0 to 1 from the map, kinda small as far as telling from the scan. With my PFC, I was in the 10.3's heading up to redline. I took out as much as 8% fuel (from about 6K up) and the peak HP went from 339 to 363 and stayed under 11.5 up to redline, until I let off near redline. An ignition amp might help light the mixture as well since its so rich, it would lean it out a bit with it burning off more than stock.
Tim |
that's amazing the Pettit ECU is that fat.....I guess they want to make sure you don't blow your engine, at least until the injectors are maxed
at 16 psi with the stock injectors this guy must have been at the very limit of engine failure |
also, I wonder is the "unlimited" ECU dumps more fuel near redline than the standard 14.7 fuel cut computer, which is what I have
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I did not intend to run 16 psi(turned the boost controller up a little too high) I am not comfortable with the 13:1 AFRs. I dont ever like to see anything over around 11.5:1 AFR. I was really surprised that the pettit ECU would even run that lean at 14 psi. I know that the injectors are probably maxed. I could MAYBE put in an adjustable FPR to put more fuel into the motor, but Id be more comfortable just installing bigger injectors. The pettit ECU is good up to a certian point, which I have surpassed evidently. Looks like its time for a power FC!
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I changed it RIGHT before going to the dyno
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Add an Apex'i AVCR you can control boost totally from baseline to redline. The power FC would be good too. Did you have a lot of turbo lag?
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oakridge,
have you had your injectors cleaned and flow tested? |
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