berk or stillen hfc on m35x

[cruzad3r]

folks - i know fatboy has successfully installed his 350z stillen hc on his 07 m35x. my question is, what year(s) are 350z parts are inter changable with our 06-07 m35x? anyone?

thanks

[CPJ LB]

I'm researching the same thing...I know the 350z and g35 parts are similar...it may just be 03-07 (VQ/DE and not the VQ/HR)...so far I'm leaning towards Berks, Kinetix, Fast Intentions & Crawfords. I'm gonna go to an exhaust expert in southern cali (LaBree Motorsports) where the owner sells and also makes great exhaust, HFC's, test pipes for Nissan/Infiniti's...From the G35 forum they say Labree HFC's last long while other brands have issues of wearing faster than normal, the cat elements blowing out and even breaking...as for fitment, I'm not 100% sure what the difference is between the M35x or sport underneath where the cats line up...

[cruzad3r]

i'm thinking for the 06-07 m35x, you have to use parts from the 06-07 z or g. case of point, i tried to retrofit 03 z AEM intake system into my 06 and everything line up except the MAF holder; which is the most important part.

anyway, let's keep the information up to date. i feel as if M owners are not into performance much but rather cosmetics. this is the epiphany of the word "ricer"

i see on your mod list you have the xyz pipe from motrodyne, is this true? i have the full most expensive intake spacer kit from that company, 1/2 inch with all other goodies and i don't see a frikin MPG increase. this is very sad as my main concern/goal was to try increasing MPG.

[CPJ LB]

as far as intakes go, I think that is the mod that has difficulties matching our cars from 350z & g35's -- besides the MAF housing, I measured the entire length of an intake + cone filter (for a g35) and it would not reach the M's front grill area...I really like the Stillen air intake box for the G...

as far as engine mods and Y pipe, parts are a better match.

I do have the xyz pipe from Motordyne -- very impressed with it. Today I just test fitted the G35 Ypipe and it is perfect -- no modifications needed. I will have to drive around with it for awhile to get a feel between that or the xyz pipe.

I understand the 1/2" plenum spacer from MD is really beneficial in the higher RPM's...by chance do you have an engine tune?? it will help. If you are running a lot of breather mods, you may be running lean...

I will update as much as possible in terms of mods for the M35 (when using 350z or G35 parts)...

BTW I was just in Connecticut last week and returned on Wednesday...I must say, the majority of cars out there were AWD's (M35x, Audi's, BMW's, etc)....it was crazy since it snowed over Halloween...AWD is a must over there....

[cruzad3r]

I hope you stayed somewhere in CT with power during your stay here as I am still without power. Back to mod, isn't the y-pipe the same as the xyz pipe? Why then they called two different name?

As for tuning, I'm not going to do it until I get the mentioned above pipe inside the car so i don't have it tune twice.

Oh yeah, up here in the new England area it's more benificial to run AWD otherwise I would've drive the 7speed RWD version.

[CPJ LB]

damn bro...sorry to hear that you're still w/out power...My wife's fam is in Milford and Shelton -- we flew into and out of JFK -- thank goodness...!!!!

they call it the xyz pipe since different modules and exhaust set ups can be ran -- more specifically on the G35 side = the Shock wave exhaust system -- the Y portion bolts into a muffler/xpipe...? as for the use on the M, the xyz pipe "is" just a modified Y pipe with calculated inlet and merge points that enhance exhaust flow from the engine...If I can find the long write up, I'll post the link...

The xyz pipe has 2.5" inlets from the cats and merge to a 3" collector. I had to run a slight reducer to the mid pipe (since it's a 2.5" inlet at the midpipe)

have you considered the MRev2 (modified lower plenum)? or do you already have it?? I must say it does provide more power thru the entire band and coupled with the spacer is a big difference.

[cruzad3r]

are you talking about the whole upper intake? if so, then no unless i can find a part out that's considerably less. i bought the stinking 1/2 spacer kit at full price and i'm less than thrill.

here's the plan. i think i'll bite the bullet and buy the uprev cable. this so i can log and monitor the car. i was trying to find this through part out but no one and i must say this, no one in the JDM world has one that's willing to resale. i might do some sort of intake mode, maybe add more inlet to feed the fresh air. at the same time, buy the k&n panel filter. any other system out there are either too expensive or have too much of a bad feedback. finally is the y-pipe so i have a cleaner, better flow from the manifold.

to be honest, i still have my brother's 03 Z HFC, more like straight pipe but i doubt it'll fit. Some part of me was wanting the exhaust manifold as well but we'll see. finally is tune. that's it. if i can get 19MPG mix driving, i think in the long run, the gas saving will offset all the mod which make it better for me to hold on to the M.

[CPJ LB]

the MREV2 is a modified lower plenum -- basically you keep your upper plenum + your 1/2" spacer and just swap out the lower plenum (it's ported, shaved and smoothed out to allow more free flowing air to the front air runners) here's some pix when I changed my stock lower plenum vs the MD MREV2 also a pix of the Intake manifold gasket -- big difference. also regarding the y-pipe, yes it allows better flow from the manifold and if you get HFC's it'll definately free up the exhaust....

the MREV2 is on the white t-shirt


stock lower plenum - pointing at front air runner - very course


MREV2 lower plenum - same front air runner -- smoothed out -- also the inlet is very smooth



MD gasket - grey (way bigger -- keeps temps cool in plenum) vs stock gasket - blk - thin

[CPJ LB]

here's some info regarding plenum spacers

http://www.motordyneengineering.com/ima ... lysis2.gif

[cruzad3r]

the lower collector is a 400+ piece man, i don't know if i want to go that route yet. maybe someday after i have the exhaust system straighten out.

[CPJ LB]

the lower collector is a 400+ piece man, i don't know if i want to go that route yet. maybe someday after i have the exhaust system straighten out.

all is not lost... I bought mine from a member on the G35Driver forum... TONS of part out sales I got mine for well under $400....just search the Private Market place (G35 VQ/DE)

anywhere from intakes, exhaust, wheels, etc....it's a great market for the M35's

[cruzad3r]

you gotta PM me the link to these forums as i do not have much luck... thanks bud oh and if i can score something good, i'll buy you a beer next time you're in town...assuming places we go has power ahhahah

[CPJ LB]

you gotta PM me the link to these forums as i do not have much luck... thanks bud oh and if i can score something good, i'll buy you a beer next time you're in town...assuming places we go has power ahhahah

PM sent...sounds good...you buy the beer and I buy the LOBSTER ROLLS

[cruzad3r]

oh you're into the Japanese cuisine, come on over, i got a good place where we can BS over cars while enjoying hot sake and kick a** chef's special rolls.

btw, thanks for the link

[JDMlove]

2 things i want to get for my M,

1/2 Plenum Spacer
Berk HFC

do you think they will make a difference in M35x?

[CPJ LB]

2 things i want to get for my M,

1/2 Plenum Spacer
Berk HFC

do you think they will make a difference in M35x?

the above items will make a difference, but, you would have to have other mods to see the benefit...

adding HFC's to a stock exhaust will not allow the full potential -- you are expelling a large flow from the exhaust manifold(thru the HFC) but then squeezing it all back into the stock size piping...ypipe, mid pipes, then the heavily chambered stock mufflers...

as far as the 1/2 plen spacer...it's been dynoed that the true gains will be in the upper rpm's. then you have to think about "how much air am I getting into the plenum?" -- hence, the need for cold air intake, or k&n drop in, or adding a z tube...

again...really depends on what you have now....

[cruzad3r]

i have 1/2" plenum spacer and my butt dyno can't tell the difference. I can however say that without Uprev tune, my MPG did not increase one bit. Again, i think any bolt on for this car requires a tune. That's somewhat different than the 03 Z that my brother had.

oh i search for kinetix parts link below and queried the company about fitting, their answer is no. This is the part

http://www.kinetixracing.com/kinetix_35 ... ckage.aspx

[JDMlove]

the above items will make a difference, but, you would have to have other mods to see the benefit...

adding HFC's to a stock exhaust will not allow the full potential -- you are expelling a large flow from the exhaust manifold(thru the HFC) but then squeezing it all back into the stock size piping...ypipe, mid pipes, then the heavily chambered stock mufflers...

as far as the 1/2 plen spacer...it's been dynoed that the true gains will be in the upper rpm's. then you have to think about "how much air am I getting into the plenum?" -- hence, the need for cold air intake, or k&n drop in, or adding a z tube...

again...really depends on what you have now....

i will add the K&N Drop in for sure, but i wont go for an intake. yeah after putting the HFC i will change the down pipes and mufflers.

do you recommend any web site to buy the Berk HFC from?

[JDMlove]

i have 1/2" plenum spacer and my butt dyno can't tell the difference. I can however say that without Uprev tune, my MPG did not increase one bit. Again, i think any bolt on for this car requires a tune. That's somewhat different than the 03 Z that my brother had.

oh i search for kinetix parts link below and queried the company about fitting, their answer is no. This is the part

http://www.kinetixracing.com/kinetix_35 ... ckage.aspx

My problem is with tuning!! there is no one here can tune VQ engines, only American cars.

I dont know if uprev can do the map there and send it to me here, and i install it!!

the problem our fuel are different than the US..

[cruzad3r]

you can try calling uprev directly and try their efile tune. i might go this route. we'll see, if i do, i'll report back. there was one case here where the guy went to uprev facility to do a dyno tune and he couldn't get anything out of the engine. that somewhat scares me!