The SSV is known for not being a good intake manifold because of its cost and the various people who have reported power losses with it has spread like wild fire overshadowing the people the SSV has gained power for. However I think there is a pattern to the people who have lost power and the many people who have actually gained power.

I think you'll find that people who have upgraded their cams and/or headers, and/or ported/polished their heads or got larger valves and then a tune have all had good results with the SSV. The people who have lost power or haven't noticed a difference all have the stock heads, stock cams, and stock exhaust manifolds or smaller TT exhaust manifolds.

The idea is, if the engine can't get the air out easily enough through the actual engine itself, the SSV will cause a power loss.
This also has applied to all sorts of other engines
http://www.vetteweb.com/tech/vemp_07...old/index.html

Some other articles/write-ups that support this are
http://headerdesign.com/extras/engin...take_Manifolds
http://www.wighat.com/fcr3/engine.htm
http://www.team-integra.net/sections...sp?ArticleID=2





These people all have cams and/or headers, and/or port/polished heads and have all gained power or at least felt they gained power with the SSV.



vortech, alphawerks headers
gained power from 4500 to redline
would have gained more power across the whole powerband if tune wasn't 2 pts too rich
https://my350z.com/forum/showthread....;highlight=ssv

vortech, stillen headers
gained power
https://my350z.com/forum/showthread.php?t=129149&highlight=ssv

vortech, cams and headers
did some minor mods and gained power all over the powerband, feels the SSV helped
https://my350z.com/forum/showpost.ph...;postcount=112

TN kit, built long block, ported heads, JWT cams
gains all over the powerband
https://my350z.com/forum/intake-exhaust/143573-kinetix-ssv-dynoed-n-a.html

vortech, DC headers
lost power above 5500 rpms, however was way too rich there - possibly inconclusive?
gained power between 2200-3000 rpms - just needed to lean out A/F there back to normal
https://my350z.com/forum/showthread.php?t=128560&highlight=ssv

NA, Tomei 268 cams, crawford headers
felt a gain in power
https://my350z.com/forum/showthread....;highlight=ssv

NA JWT cams, crawford headers
felt like a gain in power and response over crawford plenum
https://my350z.com/forum/showpost.ph...mp;postcount=8

topspeed headers
felt a gain over kinetix V4
https://my350z.com/forum/showthread....;highlight=ssv

FI with cams
feels the SSV is a little better than the V4 plenum
https://my350z.com/forum/showpost.ph...p;postcount=34
him and his mechanic also believe the issue with letting an intake manifold flow more has to do with how well the air can flow through the heads
TT, built long block, cams
gained 17 lbs tq, 26 whp with SSV
https://my350z.com/forum/showthread....;highlight=ssv








These cars lost power with the SSV and they all are running the stock heads/cams with stock exhaust manifolds or smal TT exhaust manifolds. I'm sure there's quite a few more people who have reported losses with the SSV, but from doing my own extensive searching, these are the people I've found who have reported losses.


NA, stock engine, stock exhaust manifolds
no gains felt and no faster 1/4 mile times
https://my350z.com/forum/showthread....;highlight=ssv

APS TT stock engine, small APS exhaust manifolds
power loss
https://my350z.com/forum/showthread....;highlight=SSV

vortech, stock engine, stock exhaust manifolds
lost 10 tq in midrange, top end hp stayed same
https://my350z.com/forum/showthread....ghlight=ssv+10
post #64

NA, stock engine, stock exhaust manifolds
SSV lost power
https://my350z.com/forum/intake-exhaust/208880-kinetix-plenum-shoot-out-stock-car-plus-more.html

APS single turbo, stock engine, stock exhaust manifolds
22 hp lost
JoeDirtPharmD's post near bottom of page on
http://www.az350z.com/forum/viewtopic.php?t=4105&highlight=ssv


In regards to NA people with bone stock engines with stock exhaust manifolds, 2 people claim they think they felt an improvement in power, while 3 said they didn't really notice a difference



For turbo cars with stock engines, if you think about the turbos being right there at the exhaust manifold restricting some of that initial exhaust airflow, it only makes sense that turbo setups would lose power with the SSV.

 

Wow, I'm impressed with your research. Very nicely done. This should serve as a good guide to people are interested in still running the "paper weight". I always thought it atleast looked cool.

 

thanks
I noticed the same pattern with the new cosworth intake manifold where a standard TN kit it lost power, but a big long block stroker kit setup with cams and headwork it made power, and then an NA setup for a stock 2006 model (which the REV-UP engine has revised headers, heads, and cams)

https://my350z.com/forum/forced-induction/320934-injected-performance-cosworth-inlet-manifold-review.html

 

Awesome write up!

FYI - A few links don't work... Looks like they're missing the 'post count' part of the link.

 

crap, I never checked if the links work
that's weird that they don't work cause I just copied/pasted the link into the post

I'll try to re look them up...

 

ok well the links for some reason aren't linking right, but what's weird is most of them are posted correctly when I go to edit my post


if you download the raw text of my post and then copy/paste the links into the browser window, most of them work

 

Great write-up! I heard of a local dude (local to me) who is making ~306 whp with the SSV. He has it together with I/H/TD Exhaust, cams, and a tune. I remember reading on this forum that 300+ was the threshhold for N/A power even with a tune. Your conclusion sounds very correct then, that if you want to use the SSV, you have to tune the VQ heads to accept that much airflow.

 

Yep its a very good write up and something i've believed for a long time.

 

Thanx for the write up Sentry

 

And now they have this if you have an SSV

http://www.kinetixracing.com/index.a...PROD&ProdID=15

 

that looks good

 

Yeah, it does looks good... Just wish it performed as good as it looks.

 

Just have to have FI, works fine

 

I made some decent gains and actually just dyno'd my Z thispast sunday..

JWT pop charger..
I have Stock y pipe and cats..
My dyno sheet is located here:
http://www.flickr.com/photos/21996251@N06/

 

It would be alot niver in Carbon Fiber! but IMO either u want to see it or you don't.. I prefer to keep the bay open looking..

 

NIce writeup,looks great but I'm probably just going with a spacer for now

p.s. shoutout to turismo for the link

 

 

Highway, Whoa! Those are some impressive numbers! Was your car stock when you did this dyno?
http://www.flickr.com/photos/21996251@N06/2434775272/

I assume that this dyno is with the Pop-charger, SSV, and Super Medallion?
http://www.flickr.com/photos/2199625...n/photostream/

 

wow, 30 whp is a huge gain, is that the case? both pulls the same day?

 

That cover looks dope - kinda like a alien ship....