MREV V2 Independent Dyno Tested on Bone Stock 287HP Motor (Wired 24/7's 05 Touring)
The spacer leaned out the AFR which caused the pulled timing condition. I don't remember how much exactly.
We were very busy doing installs while the operater did the dynos... I mostly just looked at HP during each run, but also noted that the spacer was what caused the lean condition.
We were very busy doing installs while the operater did the dynos... I mostly just looked at HP during each run, but also noted that the spacer was what caused the lean condition.
What was the A/F ratio when u dyno it with just the MREV v2 and what was it when u combined the MREV vs + 5/16 spacers? This is the only way to tell if combining both MREV + 5/16 spacers are more benifical with a tune.
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From: NJ
Originally Posted by Wired 24/7
Bottom line is:
MREV2 is the best bang for your buck.
MREV2 + 5/16" spacer is also very good and can benefit more than just the MREV2 if you get a tune
MREV2 is the best bang for your buck.
MREV2 + 5/16" spacer is also very good and can benefit more than just the MREV2 if you get a tune
But I agree with you that MREV-V2 is best bang for your back, unless you already have a spacer of some sort, that is. Say Hydrazine, does $222 rebate apply also to MREV-V2 or just to stock lower plenum? Thanks
Last edited by dovla; May 9, 2006 at 06:08 PM. Reason: end quote
Originally Posted by Hydrazine
So far:
On a 287 engine the MREV2 airflow may already be maxed out or very near it. Using both a MREV2 and spacer may require tuning to take advantage of it.
I know using a MREV2 and spacer worked well on my G35. But my G35 was also tuned to a healthy condition shortly before installing them.
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On the 300 HP engine, it needs to be tested with a 5/16" spacer.
Attached is the REVUP dyno on my Z.
Overall, the average HP was higher, but too much of the top end was reduced. This is not desirable for anything but daily driving.
It may be reacting very differently on the REVUP. We will need to see what the dyno results are with a 5/16" spacer.
On a 287 engine the MREV2 airflow may already be maxed out or very near it. Using both a MREV2 and spacer may require tuning to take advantage of it.
I know using a MREV2 and spacer worked well on my G35. But my G35 was also tuned to a healthy condition shortly before installing them.
------------
On the 300 HP engine, it needs to be tested with a 5/16" spacer.
Attached is the REVUP dyno on my Z.
Overall, the average HP was higher, but too much of the top end was reduced. This is not desirable for anything but daily driving.
It may be reacting very differently on the REVUP. We will need to see what the dyno results are with a 5/16" spacer.
Also, I'm interested to see how would the MREV-2 & spacer would work with headers & HFC.
Can't wait to get mine. 5/16" ISO thermal should be arriving on the 11th. Still waiting for the MREV-2.
Tony, how long until we receive ours?
Can't wait to get mine. 5/16" ISO thermal should be arriving on the 11th. Still waiting for the MREV-2.
Tony, how long until we receive ours?
I'm still waiting for mine too.. My order number was 109.. He told me that he was still on the high 80s in terms of shipping them out. Hopefully we get them real soon. I wanna show it off at my next meet (this Saturday).
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From: SF,CA
you gotta setup a waiting list tony. For those of us who can't check my350z or g35driver during work hours, we lose out on the ability to buy one of your products. Even if you haven't figured out a price, a spot in line is all most of us need.
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From: New Jersey
Originally Posted by Hydrazine
I know using a MREV2 and spacer worked well on my G35. But my G35 was also tuned to a healthy condition shortly before installing them.
Can you list your G's mods including which engine management sytem, and do you have a Dyno, including AFR, of the gains?
What specifically were the gains you're mentioning?
I already have ISO Thermal w 3/8" (original) spacer, MREV2 is on the way. Just want to consider if I should first remove the spacer until deciding on EMU / tune.
???
Thanks
The mods on the G35 were a Greddy evo exhaust. I used this exhaust because I wanted to weld in a wideband bung for Innovate sensor after the Ypipe. I just wanted the overal A/F value.
Next was the Greddy EU.
Everything else was stock. The test results are posted in the other thread.
PS - We are currently in the high 90's on the shipping number. Not much more to go before they are all shipped out. When a shipping label for your package is created you will automatically recieve a tracking number form FedEx.
Next was the Greddy EU.
Everything else was stock. The test results are posted in the other thread.
PS - We are currently in the high 90's on the shipping number. Not much more to go before they are all shipped out. When a shipping label for your package is created you will automatically recieve a tracking number form FedEx.
Last edited by Hydrazine; May 10, 2006 at 07:48 AM.
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From: Florida
Do these plots indicate that the combo actually lost some HP/TQ? Hopefully someone will post another plot of a Crawford Plenum/MREV-2; but it seems that this combo will also lose power due to too much air flow??? Thanks.
Originally Posted by Hydrazine
Attached is another dyno plot that came in last night.
This is from the same dyno day with Wired 24/7. In this particular plot Kevdog installed both the MREV2 and spacer together. In this case, Kevdogs Z also ran leaner.
Without a A/F correction tune, the combination of MREV2 with a spacer may be too much air flow on the 287 engine.
With no tune, Wired 24/7, Dovla and KevDog ran leaner with the MREV2/spacer combination. NNA made more power with the combination but it also ran leaner.
My non-revup G35 kept making more power, but I also had a healthy pre tune and the A/F was in nominal range during all tests.
In any case, more independant dynos are on the way. Some may be in as soon as tomorrow. Spacers, no spacers and even cast plenums will all eventually be posted.
This is from the same dyno day with Wired 24/7. In this particular plot Kevdog installed both the MREV2 and spacer together. In this case, Kevdogs Z also ran leaner.
Without a A/F correction tune, the combination of MREV2 with a spacer may be too much air flow on the 287 engine.
With no tune, Wired 24/7, Dovla and KevDog ran leaner with the MREV2/spacer combination. NNA made more power with the combination but it also ran leaner.
My non-revup G35 kept making more power, but I also had a healthy pre tune and the A/F was in nominal range during all tests.
In any case, more independant dynos are on the way. Some may be in as soon as tomorrow. Spacers, no spacers and even cast plenums will all eventually be posted.
Originally Posted by amG35
Do these plots indicate that the combo actually lost some HP/TQ? Hopefully someone will post another plot of a Crawford Plenum/MREV-2; but it seems that this combo will also lose power due to too much air flow??? Thanks.
It lost peak HP/TQ but it had some benefits, and it will make more power with a tune. Please read what I posted regarding the dyno plots, as I don't really like repeating myself.
Originally Posted by Wired 24/7
Please read the whole thread, before everyone jumps on this bandwagon.
Originally Posted by FOO_G
I agree if you havent started on page one you owe it to yourself and those that have posted the info to go back and slowly read through them all.
(a) John asks question
(b) I answer
(c) Larry asks the same question as (a)
(d) Everyone rolls their eyes
(e) Larry states that "it's too hard to look through 100+ posts"
(f) Tom asks the same question as (a)
THIS GETS VERY OLD, VERY FAST
Just ignore them if they ask a question that has been answered already. Let them figure it out.
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From: SoCal, Corona
Originally Posted by Wired 24/7
In all honesty I think the JWT popcharger would have the best flow conditions to maximize the benefit from the whole combo. But it would also be prone to sucking in hotter air than the stock airbox.
I kept the stock airbox not out of concerns about $$$$$$ but mostly because I like the design.
I kept the stock airbox not out of concerns about $$$$$$ but mostly because I like the design.
Okay, sorry if this is a dumb question but again i'm still learning stuff and wanting to learn. I've already read that with the MREV V2 + 5/16 Spacer it leans out the AF ratio. Would running this combo on my 287 with JWT Pop Charger be detrimental to my motor if I ran it like that say for several months before I got a proper tune?