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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Deuce's MSM built tread

Old Jun 4, 2019 | 07:36 PM
  #21  
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Originally Posted by sixshooter
Injector dead times
Originally Posted by x_25
Yeah, check that. I accidently had mine set to 500% correction cruve and had 10ms of fuel at idle on 640cc injectors. Had the same results.
Thanks for the reply guys , I'll look into that soon as a get my serial adapter by the end of the week hopefully.

But i do have a question about it tho

At some point I've overlayed the two maps ( base map and the current map ) and the only two highlited difference was the injector size and the scalling .

So I thecnicly didn't touch the injector dead time , so my question is does the dead time vary that much from an injector to an other ?

Last edited by Deuce; Jun 4, 2019 at 08:47 PM.
Old Jun 4, 2019 | 09:51 PM
  #22  
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Yes
Old Jun 10, 2019 | 07:21 PM
  #23  
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So I received my serial adaptor friday , the thing connected first try with the ecu , pretty happy that I can finally use my own laptop .

So here's the part that gets tricky , from what I've read on the internet I have to have a smooth idleling vehicule to find and set the injector dead time which I don't have cause the car plain won't start at all.

I have no information what so ever about the injectors except the sizing 950cc .

So is there a way to guessmate a little something for at least get the car running ??

Last edited by Deuce; Jul 26, 2021 at 07:49 PM.
Old Jun 10, 2019 | 08:11 PM
  #24  
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Do you have pictures of the injectors?
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Old Jun 10, 2019 | 08:44 PM
  #25  
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Originally Posted by nigelt
Do you have pictures of the injectors?
I can grab some Wednesday or Thursday

Thanks

Last edited by Deuce; Jun 11, 2019 at 07:00 PM.
Old Jun 14, 2019 | 07:35 PM
  #26  
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Talk with my friend who sold them to me , they are Bosch off a GM LSA . The cap have been machined to make them 950cc

Similar to that


Last edited by Deuce; Jul 26, 2021 at 07:50 PM.
Old Jun 22, 2019 | 07:39 PM
  #27  
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Sup guys ,

Long story short the car still isn't starting , I've done a datalogging of it cranking (it's suppose to be attached to this post if I'm not too stupid )

I've send the log to diyautotune by email , they been rly supportive to this point , but they needed a log to help me further .

I'm not expecting a respond before monday or tuesday , so if anybody as an idea of what's going on and/or can help me with the log I've post I'll try it tomorow.

Tonight I'm going out to celebrate the Saint-Jean-Baptist .... the equivalent of the 4 of July for u guys .

Thanks in advance for any help
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test1.msl (282.1 KB, 64 views)
Old Jul 2, 2019 | 07:41 PM
  #28  
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Update !!

It finally start !! I ended up driping starter fluid directly into the intake while cranking until it started . Than kept it alive with the trottle while a friend of mine was tuning the injector and **** I know nothing about .

Now it starts every time

After that I've installed my ATI damper with fab9 36-2 trigger wheel and everyting's still fine .

Which leaves me with only 3 things to do :
-Wirning the wideband into the ms3
-Installing an EBC
-Dyno tune


Last edited by Deuce; Jul 26, 2021 at 07:56 PM.
Old Jul 26, 2021 | 07:29 PM
  #29  
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Long time overdue update , been caugh up with work , buying a house and that whole covid thing.

Anyway long story short the car never saw the dyno with the GTX2971 for various reason which I'm gonna explain.

First I didn't like the spool at all , the car felt like a stock n/a miata till 4200rpm than all hell broke loose.
When the boost hit it litterally was knocking tire off in third gear at like 50mph. Mind you I have 225 45 RS4
It was really unfun kinda unpredictable to drive mostly due to the boost/power delivery

In the last couple of months I been seeing alot of people with GTX2860 Gen 2 and having great result with excellent spool.
So ended up selling the 2971 and bought one of these .

Here is my dyno sheet from last friday:



It made 294whp and 275 wtq at 21psi with ''canadian 94'' pump gas on a Mustang Dyno .

I'm really happy with the spool and power delivery . A really great little turbo
The power is perfect now but... I could use a little 10 more hp to be completly satisfied.

300whp is enough in a miata !!

Last edited by Deuce; Jul 26, 2021 at 11:35 PM.
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