MREV+ Dyno Tested On The 287 HP Engine!
 

Hi Guys,
I've recieved a million requests asking if the MREV can be installed on the 287 HP engine. Unfortunatly I had to turn them all down because the MREV is simply a spacer with a lower plenum from the 287 HP engine. ...So if you have the 287 HP engine, all you need to do is install a spacer and you automatially have a MREV.
But you know of that machining process I have been doing to the MREV+ lower collectors to allow for more air flow?...

Well, I dynod it on a 287 HP engine and it made surprisingly good gains.

...Very interesting results!

1) Dyno of stock plenum on a G35 Sedan. (basically the same 287 engine with a a little more restrictive exhaust)
2) Dyno of 5/16" plenum spacer
3) Dyno of only a modified lower collector (with no spacer)
4) Dyno of a modified lower collector (with spacer)

What is so interesting to see is that the machined collector, by itself, outperformed the 5/16" spacer! ...not in peak power, but it clearly added more area under the curve and more torque!

The modified lower collector was then dynod with the spacer. The two symbiotically worked together to make even better gains.

The 287 lower collector modification works in a way the spacers and plenums dont. I don't want to say how, but it does. http://www.350zmotoring.com/forums/i...s/thumbsup.gif It even added power at a surprisingly low RPM.

A modified 287 collector is a worth while mod on its own. (for 287 engine or as a MREV+ mod for the REVUP engine.)

Analysis is done! Here are the results:
http://www.motordyneengineering.com/..._31_Plot_1.gif
http://www.motordyneengineering.com/..._31_Plot_2.gif
http://www.motordyneengineering.com/..._31_Plot_3.gif
http://www.motordyneengineering.com/..._31_Plot_4.gif
http://www.motordyneengineering.com/..._31_Plot_5.gif
http://www.motordyneengineering.com/..._31_Plot_6.gif



http://www.motordyneengineering.com/..._31_Plot_1.gif
http://www.motordyneengineering.com/..._31_Plot_2.gif
http://www.motordyneengineering.com/..._31_Plot_3.gif
http://www.motordyneengineering.com/..._31_Plot_4.gif
http://www.motordyneengineering.com/..._31_Plot_5.gif
http://www.motordyneengineering.com/..._31_Plot_6.gif
So yes, MREV+ can be installed on a 287 engine.
If you already have a spacer, all you need to do is modify the lower collector and it will make more torque and more horse power! In addition to area under the curve, it will kick up the peak HP by about 4-5 HP.
This is a completely new catagory of plenum modification for the 287 engine! :beer:
Lower Plenum Core exchange for the 287 HP engine is a go! I'll set up the Motordyne website to accomodate core exchanges shortly.

Very cool.

For how much total for the whole package on core exchange?

:icon8:

Well since the spacer was about $260 and gave me 11hp and the machining process is only going to add 4hp then is should cost about $96 :icon17: ...wouldn't it be nice if it worked this way?

yea, for 4-5hp and 6-8tq I don't really know if the cost and hassle would be worth it if you already have teh spacer :icon43:

Seriously though, your product kicks A** and your instructions and service are top notch...a good example of that is the depth of research that you perform on your products. Thanks.

I am all stock on my 287.. So it would probably be worth it to me if it wasn't very expensive.

The value isn't in the peak numbers, its in the area under the curve.

If no other mod is used, the MMP by itself makes more than a 5/16" spacer.
If a spacer is already installed, the MMP will produce another

65.7% of the spacer TQ gains
And
55.9% of the spacer HP gains.

So if you already have a spacer installed, the cost/gain ratio relative to the spacer is roughly the same. So you can consider this a linear extension of the spacer in both price and power.

If you don't have any kind of plenum mod installed... MMP is the highest cost/power value by a very wide margin.

Assuming im ignorant here and missed it on your website.. How much is this going to cost me again?

Shouldn't be too bad if we are exchanging our core.

Any pictures of the 287 lower plenum as compared with the new, machined lower plenum?

Thanks...

It still looked like the spacer made more power than the MMP if they are installed separately. Did I misinterpret the charts?

The spacer makes more peak gains, but the MMP makes more area under the curve.

In other words MMP makes more average power. ...And thats what really counts. :)

okay......so like if I *dont* want to exchange my stock unit and want to buy one how much would it cost( or is it only available if you do the core exhange)?

For prices and pictures check out the lower half of this page.
http://www.motordyneengineering.com/350Z.asp

In the MREV section.

If you can't send in your core, you can simply purchase the MREV with the PLUS upgrade and you are done.

Nice! Anything for more power under the curve. :) Are you coming out on Saturday?

so 2 more questions if you don't mind

- if you already have the 1/2'' iso thermal spacer, all you have to buy is the MREV PLUS addon thingie, correct?

- what happened to months ago when people put the mrev on non-revup's and reported noticeable torque losses??

Also I'm wondering if it changed the sound of the engine....

What is shown on the website now is not a "add on", its a machining process or upgrade performed on a MREV kit.

And nobody has reported a torque loss with a MREV+ on a non-revup because they have never been sold to non-revup customers. As of today, this is the first and only MREV+ to be installed on a non-revup engine.

Also, (to date) there has never once been a dyno showing a loss of torque or HP with a plenum spacer. Scientific dyno test or otherwise.:)

Sorry, I can't make it on Saturday.:(

My wife reminded me of prior obligations.:icon14: