JDM Sam Custom Dyno Tune Results

[JDM Sam]

We had a dyno tuning session for a MSP that came for Unichip tuning. Here are the results.

It was very hot over 100 F degrees as you can see in the graph, so the base #s are a lot lower, but you can see the vast improvement. That is how temperature can affect your HP output. The car also just got in from a 3.5 hr road trip here, so there was not much cool down time.

All runs dyno'd in 4th gear.
Car mods are CAI, FMIC, Exhaust, Unichip. PCM/ECU is supposedly not flashed.

Run 1 is stock Unichip Map baseline, stock boost
Run 6 is custom tune, stock boost - Notice the 30+hp gains in the middle of the power curve, similar results are shown in the torque graph
Run 7 is custom tune, boost at 8.5-9 psi tapering down at higher rpm - with the slight increase of boost, gains up to 50 hp were shown over baseline run

[2.0t03speed]

damn i hate hot weather i need to move to maine or somethin

[_MSprotegy]

but then you will complaine about the snow on the road and not being able to drive your MSP.

and JDM SAM where did said MSP come from? HOUSTON?

[MSPM1cheLe]

try a daily high of 120 F.... thanks vegas

[MSP608]

but then you will complaine about the snow on the road and not being able to drive your MSP.

and JDM SAM where did said MSP come from? HOUSTON?

i wanna say Austin.

[JDM Sam]

Run 10 verifies new spark plugs did restore lost power from worn out plugs.

Final comparison. Definitely an improvement, but there is more to be had with even more tuning.

[orng1]

try a daily high of 120 F.... thanks vegas

And here I am complaining when it gets a bit past 90. It's hard to beat the weather here, cold days are in the low 70's and rarely does it get any hotter than mid to high 90's. It's got to be a pain to tune a car in that kind of heat 120.

[MSPM1cheLe]

And here I am complaining when it gets a bit past 90. It's hard to beat the weather here, cold days are in the low 70's and rarely does it get any hotter than mid to high 90's. It's got to be a pain to tune a car in that kind of heat 120.

no joke. no installs ever get done between may and september.

[njaremka]

is that bump at 5200 the VICS change-over?

[1moreMPH]

is that bump at 5200 the VICS change-over?

yes. it blows assholes -- we tried like hell to get that outta there, and while it's A LOT bettere than it was, it's still hanging in as you can see.

And Justin, you're good. Yup thats me, from Austin.

In my defence of the low numbers: we did 16 pulls in a little over 2 hours, and i got on the dyno immediately after a 4 hour trip; the last 30 minutes spent boosting like crazy cuz i was lost and late (boom06). Everything was done in 4th gear. heat soaks' a BITCH.

Car feels really strong now though, we advanced the timing a shit-ton but kept the boost down and it feels great. When we tried upping the boost, she had some detonation so we kept it down around 8.5psi after the initial spike. im pretty happy, but feel like i have to go get re-dynoed somewhere when it's a normal temperature, and i can have more than 2-3 minutes cool down between pulls (loser). AFR's were a steady 11-11.3:1 all the way to about 5700rpm where it dipped rich on to redline (conservative tune, there's still more which is good).

Thanks Sam!

[1moreMPH]

oh -- and if you havn't changed your plugs recently, GO DO THAT! cuz damn we added pretty big power with just new plugs, one stage cooler. ZFR7F's ftw.

and we may have been on to something about that VICS/switchover with the stock ECU in regards to timing... apparently that's never been analyzed before...

[CitizenPro]

oh -- and if you havn't changed your plugs recently, GO DO THAT! cuz damn we added pretty big power with just new plugs, one stage cooler. ZFR7F's ftw.

and we may have been on to something about that VICS/switchover with the stock ECU in regards to timing... apparently that's never been analyzed before...

Very nice gains (thumb)

....and yea, those plugs are the shiet! Glad u like em.....Its ZFR7F-11 for those who read this.

[njaremka]

oh -- and if you havn't changed your plugs recently, GO DO THAT! cuz damn we added pretty big power with just new plugs, one stage cooler. ZFR7F's ftw.

and we may have been on to something about that VICS/switchover with the stock ECU in regards to timing... apparently that's never been analyzed before...

yeah, looks like you need to play around with that... doesn't the unichip take care of fuel and timing? can you hack the VICS with a seperate rpm module, and play around with the changer over? maybe lock closed, do a couple runs, then lock it open and do some more. then, where the open and closed curves intersect, make that the changeover point? just thinking out loud...

[1moreMPH]

yeah, looks like you need to play around with that... doesn't the unichip take care of fuel and timing? can you hack the VICS with a seperate rpm module, and play around with the changer over? maybe lock closed, do a couple runs, then lock it open and do some more. then, where the open and closed curves intersect, make that the changeover point? just thinking out loud...

our thoughts exactly. We tried locking closed, locking open, running open vent and closed vent. The best setup was the original combo -- one open on ignition, one open at 5200 -- otherwise it would mess with the MAF reading too much and afr's were hay-wire.

Unichip does do fuel and timing. But we could not compensate the change with fuel, it just wasn't very responsive. And on the timing, if we advanced it too much it would detonate. So it's better, but the stock tune (including that switchover) still prevails as with any piggyback. Cuz believe me, we tried!(gun) haha.

And Sam: i just drove it again doing a couple 1st-3rd gear pulls while the engine was cooler. no detonation, no traction in 1st or 2nd gear :) and it's definitely faster than yesterday. Boost spikes to ~11 for a tenth of a second, then rock solid at 8psi.

[njaremka]

sounds like fun - especially when that spike hits

[shane02pro5]

Why did detonation come in at such low boost? I understand the long drive and 16 pulls damn!

I have a much larger turbo and J&S and at 13psi with 700lbs+ in passengers started to see some slight flickering in 3rd & 4th. Is that just because the little turbo is spooling at such low rpms?

[shane02pro5]

I also dip into the 10's frequently so I guess if I was leaned out a little I would have to drop my boost down!

[fr0st]

you guys should try out your cars over here in janurary...

let me tell ya that theres no heatsoak EVER... oh and no traction on dry tarmac neither

i think you could run without a IC

it,s the time of year whrere short rams become VCAI( as in very cold air intake (boom06)


and the temp is -35 -40 F or C what ever you like

my car spikes to 9 when it's that cold..(freak)

[1moreMPH]

I also dip into the 10's frequently so I guess if I was leaned out a little I would have to drop my boost down!

an afr of 10 is pig-rich, if anything you would WANT to lean that out. 11.8-12 is ideal, but on the edge; you'll make the most power, but will be on the verge of leaning out too much and knocking. Im at low 11's which is fairly conservative.

Im not really sure why it was knocking at such low boost, maybe the heat. i expected that 10 would be no problem at all, especially well tuned, so i was kinda bummed. But the car was noticeably faster with less boost and more timing; versus more boost with pulled timing for the anti-knock.

[khaosman]

Nice, I was going to try the plug thing too but forgot to bring mine. I'll have to pop in the new NGKs this weekend; maybe street tune a little more first to lean out my top-end as well. Here are my dyno logs: http://www.mazdas247.com/forum/showpost.php?p=3307912&postcount=228

[1moreMPH]

Nice, I was going to try the plug thing too but forgot to bring mine. I'll have to pop in the new NGKs this weekend; maybe street tune a little more first to lean out my top-end as well. Here are my dyno logs: http://www.mazdas247.com/forum/showpost.php?p=3307912&postcount=228

looks like you could lean it out a bit if you wanted...not too much though. from 3-4000 it gets a little rich. im real happy with these plugs, but ive also heard that the BKR7F's (i think that's right) work very well too. they are stock heat range...im debating on whether i want to drop those in instead of the ZFR7Fs since im only at 8psi.

if not, they'll be up for grabs if anyone wants them.

[JDM Sam]

No, run ZFR7F as they are gapped correctly already for you.
These are the correct plugs for your setup do not change them. You are tuned now and these will be the ones you should be using from this point out.

Stock heat range will be ZFR6F
ZFR7F-11 requires you to close the gap down as they are too wide.

BKR6/BKR7 is not the one to use b/c it is not the extended electrode.

[JDM Sam]

It detonated b/c of the air temps were very hot. His intercooler, although a FMIC, is not a very thick core. After the long drive here and dyno runs it was beyond heat soaked. It was tuned it to the most extreme temperatures, so when it will not have any hot temp tuning issues.

Also, the stock PCM has a 3000/4000 rpm switchpoint in where it kicks rich. On the street, it is based off TPS/MAF voltage readings. If you tune for one switch point vs the other one will ping while the other will be fine. You have to tune to a safe median of the 2. This is why if you floor the hell out of it from a stop it runs fine, but if you downshift sometimes it doesn't want to pick up untill after 4000. This is one reason why you should not use any piggyback for a built motor if you want all out driveability and performance.

As for the surge in power at 5200. That can be fixed better. If you retune it with the flashed PCM and the VTCS/VICS removed, it will be smoother.


The peak #s may look low, but if you try dynoing your car in 109 degree heat your car will be down on power as well. We did this all in 4th gear which is closer to 1:1 than 3rd is. The key is not having peak #s but having the power curve smooth. This is what makes a car feel fast on the street.

[JDM Sam]

Why did detonation come in at such low boost? I understand the long drive and 16 pulls damn!

I have a much larger turbo and J&S and at 13psi with 700lbs+ in passengers started to see some slight flickering in 3rd & 4th. Is that just because the little turbo is spooling at such low rpms?

You need to adjust the ignition timing advance.

[BOOSTR]

Nice work as usual JDM Sam. I like how that tune gives you a surge up top. I like to see the chart pattern and gain on 12+ psi dyno run with those paramaters.

What kind of plug is the ZFR7F-11?

[low_psi]

NGK, step cooler than stock. I run it when my MBC is installed

[JDM Sam]

NGK V-POWER
If you buy the Plain ZRF7F, without the -11 at the end, you will get a plug that is gapped already for you.

[low_psi]

Same plug just not gapped to .044?! Good to know.

[JDM Sam]

Yes, its gapped like its supposed to be.

[low_psi]

But I run a secret gap ;) How do you think I get all that hp outta 8, 9 ,10psi... or whatever the car decides to hold...

[Matrix]

Hey Sam,

I looked up the ZFR7F plugs, and it says they're gapped at 0.039" but your website has them at 0.028-0.032"

Do you regap the ones you sell or something?

[1moreMPH]

Nice work as usual JDM Sam. I like how that tune gives you a surge up top. I like to see the chart pattern and gain on 12+ psi dyno run with those paramaters.


Yea the surge is very nice, and yet it's still a very smooth power delivery throughout the powerband at WOT. I would love to be able to stick it at 10-11psi daily, but as i said when we turned it up a notch it detonated. And when we re-timed it to compensate for the extra boost it was noticeably slower even at 10psi. I know he hell-like temps and the abuse we put it through on the dyno are the reason why, but better be safe than sorry in my mind, so we tuned it at the harshest conditions And now i know it won't get screwed down the road...

[JDM Sam]

Don't you wish this graph would have been legit?

[ChopstickHero]

I have the ZFR7F plugs and I regapped them to about 0.035" ... it's really hard to tell what you gap them too... even when using that tool.

damn Sam, those are nice numbers. I need somebody experienced like you to tune my car.

[1moreMPH]

Don't you wish this graph would have been legit?

um yes please. I still argue for that being a legit dyno run, you just gotta drive the car right. I think that one time Tony must have railed through 1st like she likes it, then hard on into 2nd, 3rd, and full out on 4th. I mean...it had to have happened, how would the dyno have registered that? She's just very temperamental and you gotta drive her right. it's real i swear. i thought i remembered that run being even higher than that...i thought we were grazing 200.

...and that post sounded very sexual.(braindead

[Pirana]

That looks great...good deal!!!!

[Speed3.5]

Sam, you guys should use the meth+water juice for those hot days since 90% of the year is hot there anyways.
How you guys breathe over there ?? Oxygen can's with you all the time , lol

[Greensleeper]

Another awesome tune by JDM Sam! Congrulations!

[SOCAL MSP]

try a daily high of 120 F.... thanks vegas

Dam!! thank god I live in good oh SAN DIEGO where its always 70 to 86 f and with an add of a bomb ass breeze from the beach
rolling with your windows down even at night
No snow ins, tornados,and all that other shit.....PRICELESS

[orng1]

Dam!! thank god I live in good oh SAN DIEGO where its always 70 to 86 f and with an add of a bomb ass breeze from the beach
rolling with your windows down even at night
No snow ins, tornados,and all that other shit.....PRICELESS

Hehe that's what I'm talking about. I live about 10min from Long Beach. It's nice and cool here, well not that cool but cooler than a lot of places.

[Speed3.5]

Don't you wish this graph would have been legit?


How can i make my car run like that than ??

[1moreMPH]

wait for the planets to align, and have it on the dyno at that opportune moment. i was of the lucky few...

[LASERBLUE135]

sub'n, good info here.

[boostdprotegelx]

blast from the past.
.. great info here.

[JDM Sam]

wow 2 yrs ago.