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Simply T-5R, The Build Thread : A New Hope


Simply Volvo

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Just watched the entire video - wow

The dyno paperwork says you have a 4cyl haha 😛

Also thought it was funny the habit of putting your seat belt on when you got back in once to dyno haha then you quickly took it off

^im only picking at you now because, well, you have a 600whp t5r!!!!!!!!!!!!!! congrats man - i bet this feels really good after all the hard work and unfortunate set backs along the way

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On 7/15/2019 at 12:04 AM, gdog said:

Awesome results!

Wasn't sure what you meant by "synch loss" but then found this link:  https://www.diyautotune.com/support/tech/other/megasquirt-vr/

Now I see.  Good shielding on the VR sensor?

Thanks!! The issue actually ended up being too big of a shunt resistor (resistor wired in parallel between the + and - leg of the VR sensor. The voltage was getting too high at high rpm and the decoding circuit would overload.

I switched from a 10k to a 3.3k and it has solved the issue (atleast on the street). This will 1/3 the voltage.

On 7/15/2019 at 10:16 AM, Kevin. said:

you gonna shave yet? 


congratulations dude, you now (probably) have the most powerful P80 in America

Nope, not yet. I work remote for my company, so gonna keep looking like a bum. 😂

On 7/16/2019 at 1:26 AM, B_Dub said:

That’s just nuts, so stoked for you! There’s so much room to go on your setup, can’t wait to see you turn the wick up, big(ger) numbers to come for sure!

Awesome work!

Thank you!!

Definitely a lot more power in it!

On 7/16/2019 at 7:46 AM, tuner4life said:

This is so rad!! Nice work!

Thanks!!

On 7/16/2019 at 8:44 AM, gmsgltr said:

Just watched the entire video - wow

The dyno paperwork says you have a 4cyl haha 😛

Also thought it was funny the habit of putting your seat belt on when you got back in once to dyno haha then you quickly took it off

^im only picking at you now because, well, you have a 600whp t5r!!!!!!!!!!!!!! congrats man - i bet this feels really good after all the hard work and unfortunate set backs along the way

Shhh dont tell anyone its a 5 cyl.

Yeah I kept doing that. I would throw on the belt and be like wait wtf am i doing.

On 7/18/2019 at 10:43 AM, Commander Riker said:

Probably one of the cleanest high power builds I've seen ever.  Thanks for putting so much about it up on youtube.  Have a lot to go back and watch.

Thanks!

I really enjoy producing the YouTube videos and I think others do as well. I really want to try and take the channel to the next level. Theres SOOOO many Honda, Toyota, Mitsubishi, Supra, BMW channels, its time for a legit Volvo one.

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5 hours ago, Simply Volvo said:

The issue actually ended up being too big of a shunt resistor (resistor wired in parallel between the + and - leg of the VR sensor. The voltage was getting too high at high rpm and the decoding circuit would overload.

I switched from a 10k to a 3.3k and it has solved the issue (atleast on the street). This will 1/3 the voltage.

Seems a zener would be a more appropriate solution, no?  Thinking two zener diodes back to back (maybe a resistor in between) across the VR sensor leads?

Edited by gdog
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17 hours ago, gdog said:

Seems a zener would be a more appropriate solution, no?  Thinking two zener diodes back to back (maybe a resistor in between) across the VR sensor leads?

I don’t think a zener diode would work. That would actually clip the AC sine wave. I simply want to reduce the amplitude. 

A resistor across the VR sensor lead works fine, you just need to choose the lowest value resistor that doesn’t give you problems at low rpm. I was running too high of a value (10k). Switching to 3.3k 1/3rd the amplitude and fixed the problem.

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