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Old 04-26-2009, 11:43 PM   #21
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Are there a few people on this forum in the Jax area? Are there any good drives down your way?
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Old 04-27-2009, 12:08 AM   #22
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Default disapointing dyno day

I took my car to the dyno yesterday, to get a good baseline before I started playing with the tuning (not having tuned before).

was putting about 140 hp to the wheels with the spark blowing out at higher rpms under boost.

I could use a little advice on the AF and spark tables I am running. I believe they are relatively conservative, but I was hoping for a little more power.

They guy at the helped me out a bit (and charged me a bit) and smoothed the AF ratio out. We tweaked the boost up to about 14.5 psi (not looking for a daily driver, I am aware that this has the potential to do more engine damage then the original 10 psi it was running at). The car feels smoother until it starts blowing out the spark in the higher RPMs, but not the power I wanted.

The AF ratio stayed around 12 on the wideband that was hooked up at the dyno, I am going to install an LC-1 for my own tracking.

My car has a Greddy trubo kit, front mount intercooler, 550cc injectors, welbro 255 fuel pump, 2.5 in exhaust from the down pipe back.

I know that I can gain some more power from new plugs, which I purchased yesterday and need to put in (along with wires). Also, I know the down pipe is a restrictive point in the exhaust. Any other advice would be appreciated.

I am posting my tables on here hoping for some feedback, figure this question is asked just about daily by most other noobs so I would not post to the MS forum, and keep it in the intro forum.

Thanks for the advice.

ps Also, I realize that my tables are a little too close to my max boost pressure (being tables up to 215 kpa and the boost up to 14.5 psi), but the AF ratio seemed ok at the dyno.

thanks
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Old 04-27-2009, 12:10 AM   #23
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sorry having trouble posting the tables:
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Old 04-27-2009, 12:15 AM   #24
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lets hope that third time is the charm........https://www.miataturbo.net/images/smilies/noob.gif

Name:  fuel table 4-25-09.bmp
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Name:  spark table 4-25-09.bmp
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megasquirt200904251611.msq

thanks
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Old 04-28-2009, 12:24 AM   #25
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I am posting this in the megasquirt section, thanks for looking it over.
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Old 04-28-2009, 12:51 AM   #26
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Welcome to MT

Good luck on 250 WHP, I'm up to 15psi with only 210 ish. I know my motor is getting tired but I'm sure yours is too. Even 200+ is good for prob high 12's and a very capable autocross car. Don't push it or the greddy is just going to become a heat pump and create more issues than its worth.

Just my .02c
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Old 04-28-2009, 01:44 AM   #27
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14 psi gave me 240 on the more conservative spark map, and I hadn't left much on the table.

Don't get caught up in numbers though, a little over 200 and you'll have a very capable challenge car.
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Old 04-28-2009, 07:52 AM   #28
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I can always go with a little extra weight cutting, my goal is for mid 12's to stay competative. Thanks for the input.

With the Greddy am I better looking to find a used 16b, or something a little larger, from a junk yard or locally and flowing more air?

I opened a similiar thread on the MS forum tryng to get some advice on the tables I am running. I can't figure out why I am not putting more power to the dyno, unless the guys is screwing the the dyno settings trying to get me to keep coming back...

Thanks
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Old 04-28-2009, 10:42 AM   #29
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Quote:
Originally Posted by tripp View Post
With the Greddy am I better looking to find a used 16b, or something a little larger, from a junk yard or locally and flowing more air?
Flowing more air = more lag, more budget spent elsewhere.

Reserve judgement about your current turbo setup until you've sorted out your EMS issues!
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Old 04-28-2009, 11:18 AM   #30
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cool, just wanted to run it by you guys before datalogging and tuning the wrong set up

thanks
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