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Street Tuning the Boosted Miata | AFR and BOOST 

Sean Does Tech
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The Boosted Miata recently over-heated and air fuel ratio was not correct so I took it out for some tuning runs. I corrected the AFR and also dialed in the boost controller which was over-shooting target.
I hope you like my video and be sure to subscribe to see more awesome videos as I build my boosted Miata!
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27 фев 2017

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Комментарии : 45   
@willroski5514
@willroski5514 5 лет назад
You are absolutely correct. There is more load on your engine when you’re on the street
@Bbeavis
@Bbeavis 7 лет назад
Cool little video... I'm just about to tune my boosted MX-5 so this was nice to see.
@paulm2701
@paulm2701 7 лет назад
Great video thanks for posting. Im just learning to tune and you make things easy to understand. Keep up the good work
@GearHeadsGarageChannel
@GearHeadsGarageChannel 7 лет назад
Glad the overheat didn't kill your motor!! Street tuning often gets frustrating, just keep getting it dialed in and put in the work tho and when it's done it'll all be worth it =)
@Seandoestech
@Seandoestech 7 лет назад
GearHeads Garage thanks for the encouragement. I just want a safe drivable and fast tune, is that too much to ask? :-) like everything else, gotta work at it.
@GearHeadsGarageChannel
@GearHeadsGarageChannel 7 лет назад
Boosted Miata When it comes to cars it always feels too much to ask!
@midwestmods
@midwestmods 7 лет назад
When tighting clamps on couplers try to make sure the clamp is actually right over the barbs (not passed them) Even through the clamp is closer to the edge of the coupler it will hold much better. I worked on commercial sprinkler systems and we used those plastic couplers a lot, that was one of biggest problems! Cheers!
@Seandoestech
@Seandoestech 7 лет назад
midwest mods good tip, thanks!
@SnoizYDubstep
@SnoizYDubstep 7 лет назад
Could you do more tuning videos? They could very much benefit me and most likely others!!
@J3n555
@J3n555 7 лет назад
Great video!
@Seandoestech
@Seandoestech 7 лет назад
Thanks man!
@MiataMods
@MiataMods 7 лет назад
Interesting video Sean! That blow off valve sound tho... man I want a turbo..
@GearHeadsGarageChannel
@GearHeadsGarageChannel 7 лет назад
MiataMods Yesss Yesssss...let the desire flow through you ;)
@Seandoestech
@Seandoestech 7 лет назад
Just don't let the money - it goes quickly :)
@GearHeadsGarageChannel
@GearHeadsGarageChannel 7 лет назад
Ain't that the truth...
@MiataMods
@MiataMods 7 лет назад
Well.. money well spend right haha
@shadowkeeper0
@shadowkeeper0 7 лет назад
A good idea also, is to program the check engine, or any dash light as an idiot light. On my Hydra set up, i have the most important things on the check engine light (as the hydra doesn't throw codes), that is knocking, intake temperature and coolant temperature. The moment i hit 110c or 230f it comes on. I also programmed the immobilizer light, which is useless otherwise, to be an idiot light for extreme AFRs ( 15.5 which i am on cruise). Almost all the light bulbs on the dash are easily controlled, you just splice a wire on the specific ground wire, corresponding to the bulb behind the instrument cluster, right to a sourced ground on the ECU and you are done.
@Seandoestech
@Seandoestech 7 лет назад
shadowkeeper0 that's brilliant. I should def use the immobilizer light for something since it flashes all the time anyway
@shadowkeeper0
@shadowkeeper0 7 лет назад
What i also failed to mention is that you retain the original functionality of the modded dash light, you can even use the beeper for the seatbelt, but there are some restrictions because there is a micro controller in the cluster that controls some functions. For example i modded also the dash brake light to light when i use an alternate ignition/fuel map, but it would also light up when the handbrake is up, or brake fluid is low etc.
@otteroptimistic6426
@otteroptimistic6426 7 лет назад
Awesome video! Btw that turbo noise... what kind of bov are you running Sean?
@Seandoestech
@Seandoestech 7 лет назад
Sun Cheon thanks! that's turbo flutter. No bov at the moment
@okiemaxx5421
@okiemaxx5421 7 лет назад
How did you rescale you're ve tables for boost? Did you scale the by15? Getting ready to boost my vvt and looking or options. Thanks and keep up the hopeful videos
@Seandoestech
@Seandoestech 7 лет назад
Picked my max boost KPA and then interpolated from 100. I'm closed loop.
@DJimeku
@DJimeku Год назад
how do you feel about open loop boost tuning
@sugoi4983
@sugoi4983 7 лет назад
any tips for hot restart? car is lean at idle for a minute or until i start moving.
@Seandoestech
@Seandoestech 7 лет назад
You can try setting your after start enrichment a bit richer under your start up / idle menu. Also you may want to look into setting up MAT corrections under the basic / load menu. You'll have to research that one - it's a bit deep
@kristofkreszan6448
@kristofkreszan6448 7 лет назад
I guess with 200kpa it is forged, right ? Do you have a video about the build ? ( i searched for it on your channel but for some reason I couldn't find it)
@Seandoestech
@Seandoestech 7 лет назад
Yes forged. I really didn't do any engine build videos. I'll probably do a parts / budget breakdown video soon. I planned on more detailed build videos, but broke the wrist, so it complicated my ability to build and film at the same time.
@BlownMiataGuy
@BlownMiataGuy 7 лет назад
love that bov!! if you don't mind me asking, what bov is that?
@Seandoestech
@Seandoestech 7 лет назад
#BlownMiataGuy it's called the bov that's not there! don't have one lol. your enjoying the raw noise of good ol turbo flutter...
@BlownMiataGuy
@BlownMiataGuy 7 лет назад
Boosted Miata I figured that, but thought you was a man that not would have the bov missing due to it can damage the turbo..
@Seandoestech
@Seandoestech 7 лет назад
#BlownMiataGuy.I'm not particularly worried about it at these lower psi levels on this small ball bearing turbo I run.
@melody3741
@melody3741 7 лет назад
so did you do all the tuning on your own or did you pay a shop to do the first tune?
@Seandoestech
@Seandoestech 7 лет назад
Melody I tuned it with the help of my brother on his dyno, then street tuned it to get it refined. if you can afford it, dyno tuning is good to get a safe tune to work from.
@oThreeSixty
@oThreeSixty 7 лет назад
Details on how your set up to tune on a Mac?
@Seandoestech
@Seandoestech 7 лет назад
oThreeSixty I use tunerstudio with the megasquirt ecu and connect with a serial to usb cable (with FTDI chipset)
@oThreeSixty
@oThreeSixty 7 лет назад
Boosted Miata awesome. thanks
@GearHeadsGarageChannel
@GearHeadsGarageChannel 7 лет назад
Hey Sean where you been man!? Hope all is well!
@Seandoestech
@Seandoestech 7 лет назад
GearHeads Garage all good. been shooting a lot but too busy to edit with a new job, but should have some stuff up this weekend. thanks for checking in. you've been busy I see!
@GearHeadsGarageChannel
@GearHeadsGarageChannel 7 лет назад
Good to hear, will look forward to seeing what you've been doing. and yea, we've been real busy!
@Seandoestech
@Seandoestech 7 лет назад
+GearHeads Garage thanks man! I got to catch up on my viewing, too much to watch!
@GearHeadsGarageChannel
@GearHeadsGarageChannel 7 лет назад
Boosted Miata of course! yes theres always a lot out there!
@Shredzilla100
@Shredzilla100 5 лет назад
Are you still having trouble with overboost?
@Seandoestech
@Seandoestech 5 лет назад
Yeah, it’s sorted out. My closed loop boost control was too aggressive.
@Shredzilla100
@Shredzilla100 5 лет назад
Can you explain exactly what is closed loop boost control?
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