Bolt on VVT swap dyno
1 Attachment(s)
Well I put the Miata up on the dyno today. Mustang dyno in Greenville SC.
https://www.miataturbo.net/attachmen...ine=1436400248 Quite a bit more than I was expecting honestly, and it makes me wonder if the dyno wasn't reading a bit high. It's a brand new Mustang dyno, though, and when they were calibrating last week it read exactly 10% lower than the Dynojet across town, which is the NASA-advertised amount. 139hp uncorrected, but it was about 95 degrees today. Car details: 95 chassis MS3 Basic ECU 02 junkyard engine (52k miles) UK square top manifold 3d printed air intake (Cold Air Intake) racing beat header + no cat used borla catback Spent about 2 hours fiddling with the tuning and was able to pull about 2 extra HP out of it through increasing VVT target on the high end a couple degrees but that's about it. Ignition timing was spot on from the Reverent base map - any more or less and it lost power. VE settings were pretty spot on from using VEAnalyze on the road. Car feels great! Cheers, and thanks all for the help! And a video: Facebook Post |
The NC/SC VVT swap crew grows stronger...
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1 Attachment(s)
Originally Posted by Dunning Kruger Affect
(Post 1247915)
The NC/SC VVT swap crew grows stronger...
https://www.miataturbo.net/attachmen...ine=1436535489 |
Originally Posted by shuiend
(Post 1247918)
I am about to drop a VVT motor in to one of my 94's tomorrow.
https://www.miataturbo.net/attachmen...ine=1436535489 |
<p>Nice results. pics of the cold air intake please. </p>
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Originally Posted by Uncle Humjaba
(Post 1247919)
Oh, what I would have given to have a garage like when swapping mine. I had to do mine in a single car apartment garage.. Fitting a Miata, extra engine and trans, cherry picker, all my tools and spare parts in a one car garage was a challenge in itself.
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Originally Posted by cyotani
(Post 1247925)
<p>Nice results. pics of the cold air intake please. </p>
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Originally Posted by cyotani
(Post 1247925)
<p>Nice results. pics of the cold air intake please. </p>
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Originally Posted by Dunning Kruger Affect
(Post 1247915)
The NC/SC VVT swap crew grows stronger...
Originally Posted by cyotani
(Post 1247925)
<p>Nice results. pics of the cold air intake please. </p>
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nice results! there's 1.8L supercharger guys that can barely get that...
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<p>
Originally Posted by asmasm
(Post 1247941)
You did the CFD on this.
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Bolt on VVT swap dyno
Screenshot of the vvt map possible?
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2 Attachment(s)
Originally Posted by arghx7
(Post 1248039)
Screenshot of the vvt map possible?
Originally Posted by cyotani
(Post 1247987)
<p></p><p> </p><p>LOL. Just didn't see the pic of it. Looks like the intake is working well. </p>
https://www.miataturbo.net/attachmen...ine=1436571468 |
Did you gut the maf before running the IAT sensor into it?
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Originally Posted by asmasm
(Post 1248185)
Did you gut the maf before running the IAT sensor into it?
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Originally Posted by Uncle Humjaba
(Post 1247919)
Oh, what I would have given to have a garage like when swapping mine. I had to do mine in a single car apartment garage.. Fitting a Miata, extra engine and trans, cherry picker, all my tools and spare parts in a one car garage was a challenge in itself.
I feel like a retard for not thinking of this. |
Mind posting screenshot of Spark Advance Table as well? Thanks.
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1 Attachment(s)
Originally Posted by gjsmith66
(Post 1248921)
Mind posting screenshot of Spark Advance Table as well? Thanks.
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Nice dyno numbers... Torque curve looks fairly flat without the typical mid-rpm dip that stock Miata's tend to have.
I am surprised to see 9 degrees of intake cam advance on the top end. Did you try lower values like 5 or 0 degrees? Most tgreads on this forum covering VVT tuning suggest reducing advance to 0-5 degrees above 5500rpm. Assuming that you did try less advance and the dyno showed less power, any idea why your setup likes the additional high RPM advance? (It does go against the theory of adjustable intake cams, not just forum posts...) Thanks |
<p>You have 2 rows in your ignition table set at 100kpa load. Set your top ignition load row over 100kpa.</p><p> </p><p>I'm super jealous of your power. I think we need some drag times to substantiate. :) My very similar build makes <120whp on our dynapack. </p>
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