matth76 Posted February 1, 2010 Share Posted February 1, 2010 I have heard the Motordyne 1/2" plenum spacer will add more of a "growl" to your 350z but is the same true of the thinner 5/16" plenum spacer but just to a slightly lesser extent, or is the extra noise barely noticable? Done a search but cannot find any info about this. Thanks for any help and info. Quote Link to comment Share on other sites More sharing options...
IanS16 Posted February 1, 2010 Share Posted February 1, 2010 barely noticeable, if you just want sound get a pop charger, mid pipe or high flow cats/decats. (or all) Quote Link to comment Share on other sites More sharing options...
Husky Posted February 1, 2010 Share Posted February 1, 2010 when i put my spacer on i noticed it makes that cool tube sucking sound when you blip the throttle i like it, its quite quiet but still definately there, noticable with the bonnet open defo. but i wouldnt class it as growl , no Quote Link to comment Share on other sites More sharing options...
dcash5 Posted February 1, 2010 Share Posted February 1, 2010 Unless you are getting a retune its a waste of money i gained 1bhp and lost 10ft lb of torque Quote Link to comment Share on other sites More sharing options...
matth76 Posted February 1, 2010 Author Share Posted February 1, 2010 Unless you are getting a retune its a waste of money i gained 1bhp and lost 10ft lb of torque Was that a Motordyne spacer or another brand? Was the before and after dyno done at the same place same day? Quote Link to comment Share on other sites More sharing options...
rtbiscuit Posted February 1, 2010 Share Posted February 1, 2010 Unless you are getting a retune its a waste of money i gained 1bhp and lost 10ft lb of torque i thought the plenum spacer was one of the few mods that gave a gain without the need for a retune Quote Link to comment Share on other sites More sharing options...
andlid Posted February 1, 2010 Share Posted February 1, 2010 my plenum spacer gave 9hp, guess I lost installing the kinetix... (without tune on JDM) Louder and more suck noise for sure and more torq midrange. Quote Link to comment Share on other sites More sharing options...
Chris`I Posted February 1, 2010 Share Posted February 1, 2010 The problem with the Zed is there is limited tuning avaiable with the ECU in stock tune. Adam@Z1 has covered it a few times that you have to be selective with your mods and what seemingly works for one Zed doesnt work for another. If you bolt on all mods (intake, spacer, decats, exhaust) I will guarentee you will loose power without a remap. Mods on their own will yeild some power (usually) but together we have seen all sorts of weird combos. Personally, I gained 10HP and a nice slug of torque throughout the rev range with my MD spacer, but some have seen losses. As for noise, on a stock intake, I dont think the noise difference is noticable, but with something like a pop charger, it will make it "roar" a bit more Quote Link to comment Share on other sites More sharing options...
Ian Posted February 1, 2010 Share Posted February 1, 2010 The problem with the Zed is there is limited tuning avaiable with the ECU in stock tune. Adam@Z1 has covered it a few times that you have to be selective with your mods and what seemingly works for one Zed doesnt work for another. If you bolt on all mods (intake, spacer, decats, exhaust) I will guarentee you will loose power without a remap. Mods on their own will yeild some power (usually) but together we have seen all sorts of weird combos. Personally, I gained 10HP and a nice slug of torque throughout the rev range with my MD spacer, but some have seen losses. As for noise, on a stock intake, I dont think the noise difference is noticable, but with something like a pop charger, it will make it "roar" a bit more With all bolt ons (headers wasnt fitted at the time) I gained about 7hp without a remap but TQ was quite a bit down on standard figures Quote Link to comment Share on other sites More sharing options...
Chris`I Posted February 1, 2010 Share Posted February 1, 2010 With all bolt ons (headers wasnt fitted at the time) I gained about 7hp without a remap but TQ was quite a bit down on standard figures Sorry, should have said torque. And with 7HP was that on the same day? Same dyno, different days, 7HP is neither here nor there, so could have actually lost you a bit of top end too Cant wait to get a Zed that responds to mods Quote Link to comment Share on other sites More sharing options...
Ian Posted February 1, 2010 Share Posted February 1, 2010 Had it dynoed twice but a few months after fitting mods. Same dyno models but different place. Run 1 - Kinetix plenum, popcharger, decats, ichiba y-pipe & blitz exhaust = 282hp/240tq Run 2 - MD 5/16 spacer, popcharger, Custom HFC, custom y-pipe, greddy exhaust = 282hp/242tq Run 2 was about 18months after run 1 Quote Link to comment Share on other sites More sharing options...
andlid Posted February 1, 2010 Share Posted February 1, 2010 Had it dynoed twice but a few months after fitting mods. Same dyno models but different place. Run 1 - Kinetix plenum, popcharger, decats, ichiba y-pipe & blitz exhaust = 282hp/240tq Run 2 - MD 5/16 spacer, popcharger, Custom HFC, custom y-pipe, greddy exhaust = 282hp/242tq Run 2 was about 18months after run 1 hmm the kinetix plenum has the "spacer" built in so thats pretty expected result? Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted February 1, 2010 Share Posted February 1, 2010 Cant wait to get a Zed that responds to mods They do if you remap, all modern ECU,s self tune it the way for the ecu to tune the car for the wear and tear of mileage , different weather conditions. cars have come a long way in the last few years. If you want to bolt stuff on your need a remap full stop. Even a totally stock car we can make it drive better and give a better spread of bhp/torque after a remap. 370's are even more intelligent but that can wait for another day Mark Quote Link to comment Share on other sites More sharing options...
Chris`I Posted February 3, 2010 Share Posted February 3, 2010 If you want to bolt stuff on your need a remap full stop. Even a totally stock car we can make it drive better and give a better spread of bhp/torque after a remap. 370's are even more intelligent but that can wait for another day Mark See I hear differing views from the US. The 370z seems to respond really well to breathing mods, giving a good slug of HP and torque throughout the rev range (~20HP from intake or exhaust, havent seen conslusive numbers for both combined). Those that have then tried to use UpRev to improve it, have found only minimal gains over the OEM map, which seems to suggest the OEM map does rather well with itself. However those with no mods seem to release about 15-20hp from having UpRev just adjust the AFRs and I beleive a tweak to the timing. Have UpRev cracked the VVEL yet? (or anyone for that matter?) We'll move this to another thread if you have some juicy info Quote Link to comment Share on other sites More sharing options...
M13KYF Posted February 3, 2010 Share Posted February 3, 2010 plenum spacer is for performance and not for sound Quote Link to comment Share on other sites More sharing options...
matth76 Posted February 7, 2010 Author Share Posted February 7, 2010 I've now got the plenum spacer and to be honest I can hardly notice much difference in sound (maybe with the bonnet up I would), perhaps a bit more induction noise. The car certainly pulls a lot harder mid-range - many thanks to Mark at Abbey who did a great job fitting it all Quote Link to comment Share on other sites More sharing options...
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