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.

oakridgerx7

signature

silverflash2

iTrader: (2)

very nice what mods ? no sig

silverflash2

iTrader: (2)

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

mazdaspeed00

iTrader: (6)

any fuel upgrades? are you running a ported motor? are you controlling boost with just the pettit ECU?

oakridgerx7

I can take a pic tomorrow, The intakes are really tight.

oakridgerx7

supra fuel pump, boost control via needle valves. stock reman.

mazdaspeed00

iTrader: (6)

very nice. are you maxing out your stock injectors?

SNracing

in your sig it says "best track time 8.19 @ 86mph".... what distance was that, im guessing 1/8 of a mile?

oakridgerx7

I feel pretty safe in saying that i am. Im gonna have to upgrade ECUs before I can upgrade injectors. I also have a water/alcohol injection kit to Install, which will help out a lot. I may also go with a adjustable FPR to help the injectors flow a little more fuel.

mazdaspeed00

iTrader: (6)

its 1/8 mile. no way u can run a 8.19 with a trap speed of 86mph

oakridgerx7

Yep, thats all we have around here. I feel pretty confident that I can get that down to the high 7s with a good set of drag radials.

Mahjik

iTrader: (1)

Good stuff oakridgerx7!

books

iTrader: (8)

Would you post your dyno charts including the AFR portion?

thanks a bunch

patriick

iTrader: (3)

Nice numbers at 12psi, especially for a non-ported motor. What were the conditions? (temps, correction factor, 18" wheels?, etc)

oakridgerx7

I know the temp was around 40F, Im not sure what the correction factor was.

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.

oakridgerx7

dyno chart finally

oakridgerx7

anyone know why my power drops so quickly after 7k?

BlackRX7Turbo

If you drive funny car or top fuel, you could go 1/4 track and completely let off and finish out the track coasting and you might get 8.19 @ 86mph in the 1/4 mile...

Tim Benton

iTrader: (1)

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

soru81

Only one question guys, is this rear-wheel or flywheel HP?

TechDude

nice numbers

Tim Benton

iTrader: (1)

rwhp on the dyno.

was the boost stable during the run? If it's dropping off, then the HP would too.

Tim

oakridgerx7

boost was stable until redline, I guess the turbos just lost their efficiency

Tim Benton

iTrader: (1)

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