Milton Tucker

iTrader: (2)

I made 173 HP on a Mustang dyno at 13PSI with the shitty greddy down pipe, and band aids.

gospeed81

iTrader: (51)

ok...


Seriously, that's more than I'm making right now I'm sure. I'm only running 9psi though. For the cars I can run dead even with, I estimate I'm pushing 155-160 by comparing power/weight ratios(calculating 12% drivetrain losses for their crank hp).

173hp is actually a good deal more respectable than 140hp with more (EDIT, less) boost.

40% may be an overestimate, but he's missing atleast 50whp there, which is HALF of what he should anticipate as an improvement of N/A power.

There's a big difference between missing 15-20 ponies due to a shitty downpipe and bandaids...and missing half of what you built the setup for due to a crummy tune or whatnot.

Milton Tucker

iTrader: (2)

The point I was making is 140HP on his setup is far from what his potential is.
With a free flowing exhaust and a good tune his car should make another 100HP. There have been several greddy / MS equipped Miata here making 240+HP.

gospeed81

iTrader: (51)

Ok, then we were saying EXACTLY the same thing.

40% of 240whp is . . . . 96whp.

140+96=236~240

What he should be making.

I was being sarcastic, sorry for the misunderstanding.

You're right, he is way behind his potential, which I think we've all posted plenty about. Maybe we should get back to helping him figure out where he's ******* up.

kotomile

iTrader: (24)

+1

See sig

tripp

No offense taken, I have not changed that setting, I am still very new to megasquirt, so I need to play with the settings. The car already had the MS in it when I bought it, and the only tweaks I have done were at the dyno (done by the guy at the shop). I am hesitant because I don't want to blow the motor by doing something dumb.

Thanks for the pointers.

gospeed81

iTrader: (51)

That is DEFINITELY something that will blow up the motor!

Please pull out the timing gun, or go buy a cheap HF one at least.

Go through Brain's instructions which entail:

tripp

here are the logs from the dyno run, I exported them to excel.

Looks like I am running fatter then I had thought at first (dipping to mid/low 11's for AFR. Unfortunately I do not see boost logged in the dyno runs.

Braineack

iTrader: (62)

you didn't log it with your MS?


the AFRs look fine.



zip and attached the drf files while you are at it.

tripp

I didn't log it with MS, was trying to figure that out and then got tied up in the tables and dyno runs. Next time I tune I will need to set up MS to log first.

Attached are the dyno files (I am assuming drf format)

tripp

I adjusted the battery voltage correction to 0.1 v and the injector times to 1, I still need to burn these changes to the ECU. (please let me know if it looks correct in the table pictured, seeing that I am going from a factor of 10 to 1 I just want to make sure I am not going to go too lean or anything)

The overboost from what I could see (not hooked up to the ECU) was 195kpa, I bumped it to 215kpa (table pictured)

I will need to get a timing gun (learn to use it, which should not be an issue) and ensure that the timing is done correctly. I might wait for the weekend for that one.

thanks!

gospeed81

iTrader: (51)

Now your overboost says -10.7???

Maybe some difference in values in our megasquirt folders is screwing me up. You will KNOW if it cuts in though, and easy to fix.

I would fix timing quickly.

Changing those injector values may require a datalog or two to fix.

tripp

looks like the tables did not upload that time

Braineack

iTrader: (62)

there's just no way that was 12psi....

tripp

I need to fix a couple things first (hook up my wideband, fix the cracked hose I have, do something about my spark blowing out), but I will try to do a couple pulls on the street and data log in MS before I change my ECU settings to the ones I posted last night.

But I am seeing the boost guage get in the 12-14 range and the log from the dyno which was hooked to my intake manifold was reading a max boost of 12 psi. I will take a picture of the dyno sheet and post it tonight if that helps on the boost question.

Mach929

iTrader: (3)

i'm having trouble believing that's 12psi too, looks a lot like stock greddy kit

paul

iTrader: (21)

Holy FAIL

Braineack

iTrader: (62)

oh okay i see that data....using the stock downpipe, cat and exhaust?

but notice where the boost was when you hit peak RWHP...

tripp

no cat, stock downpipe, free flow exhaust only a resoniator, no muffler

The boost might be leaking through the hose I need to replace (it is not a main intake line but could be a factor). Also, the air filter is not the largest (it is a HKS hemisphere one), I am looking to move to a larger cone filter.

Any other thoughts?

gospeed81

iTrader: (51)

Yes actually...

Please set your timing (or confirm it's correct) before doing ANYTHING.