jnoz Posted July 8, 2016 Share Posted July 8, 2016 Hi all, Has anyone tried this at all? I've got a machine shop to hand, was going to open up the throttle body and use a larger butterfly flap. I'm going to dyno before vs after. Looking to do a range of little upgrades like this before the remap. Feedback appreciated! Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 8, 2016 Share Posted July 8, 2016 I'm putting together bigger tb kit the same as NWP but cheaper. Just waiting on machine shop getting back to me with the adapter plate so I can test it then will apply to do a group buy on here Just waiting on machine shop 1 Quote Link to comment Share on other sites More sharing options...
russyb Posted July 8, 2016 Share Posted July 8, 2016 best news I had all week ben keep us posted , if you need someone to test fit let me know Quote Link to comment Share on other sites More sharing options...
jnoz Posted July 8, 2016 Author Share Posted July 8, 2016 I have my own. Maybe hit me up if you don't get any luck with them Quote Link to comment Share on other sites More sharing options...
russyb Posted July 8, 2016 Share Posted July 8, 2016 the nwp kit has been tried and tested in usa for years ben basically doing a direct copy of that kit, can I ask what throttle body you have used ? btw pics say a thousand words :teeth: Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 8, 2016 Share Posted July 8, 2016 Pics will be up when I have a plate, jnoz if the local place let's me down ill hit you up And can test fit on my own Z basically I think the NWP kit, once you factor in postage, import duty etc, is overpriced so I'm copying their idea, not directly copying plate though as that means buying an NWP kit so designed from scratch will be as plug and play as NWP though Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 8, 2016 Share Posted July 8, 2016 After I've finished tb ill be working on a 3.5" maf and intake pipe that locates filter in front of rad so perfect cold air feed to it About time the UK had these thibgs available 1 Quote Link to comment Share on other sites More sharing options...
jnoz Posted July 8, 2016 Author Share Posted July 8, 2016 (edited) Once I've done it I'll throw up a photo. Working on a few other products at the moment. Also be looking into the 370z setup as have one of those to hand also. Hey, just seen this, throttle body spacer. What the hell? 4-6HP? http://www.ebay.co.uk/itm/Nissan-Altima-Maxima-Pathfinder-350z-Infiniti-G35-Throttle-Body-Spacer-FIT-3-5-/131743080814?hash=item1eac7fe16e:g:UDIAAMXQzkZRmsYn Edited July 8, 2016 by jnoz Quote Link to comment Share on other sites More sharing options...
davey_83 Posted July 8, 2016 Share Posted July 8, 2016 Need more than just a pretty spacer Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 8, 2016 Share Posted July 8, 2016 Spacer won't add anything lol Quote Link to comment Share on other sites More sharing options...
jnoz Posted July 9, 2016 Author Share Posted July 9, 2016 Was just curious really. Thought that was a bit odd. Will get myself a spare throttle body and see what land I have spare to machine out. Quote Link to comment Share on other sites More sharing options...
Paddy78 Posted July 9, 2016 Share Posted July 9, 2016 I thought / have read that the limiting factor was the plenum chamber? Increasing the TB or intake tube wouldn't increase performance if the bottleneck is the plenum? I have no doubt that you know more about this than me, but all the articles and threads I have read where larger TB's have been installed, there has been little to no evidence of performance gains? Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 9, 2016 Share Posted July 9, 2016 Look up NWP They don't increase your headline figure, but give you more hp after the peak in the higher revs When coupled with long tube manifolds, larger maf and intake and a plenum spacer the guys in the states are getting 300 at the wheels Quote Link to comment Share on other sites More sharing options...
Snjur Posted July 9, 2016 Share Posted July 9, 2016 Well i would take usa figures with reserve. That means that just with basic bolt on's and larger tb he is having around 330 on crank. For me bit optimistic. Also on stock plenum after larger TB you are again coming on a smaller diameter of plenum "neck". Should this "neck" have to be bigger diameter to follow flow of larger tb Sent from my SM-G850F using Tapatalk Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 9, 2016 Share Posted July 9, 2016 It's optimistic going by UK figures but very well documented state side. Right through all the mods we consider the max for bolt ons but as no one in the UK runs long tube headers, or bigger tb, or bigger maf and intake we have never seen it NWP have dyno plots etc of the difference a larger tb makes, a tb has a butterfly etc inside which disturbs the flow don't forget The key strangle points on a normally aspirated vq are the manifolds, tb and intake pipe/maf, then the plenum, then the cams etc The tb, inlet pipe/maf were improved on the hr by doubling up, something nissan didn't just do with no reason to. The hr also had significantly improved manifolds but still compromised due to emission laws needing the cats close to the engine. 1 Quote Link to comment Share on other sites More sharing options...
KyleR Posted July 9, 2016 Share Posted July 9, 2016 I'm with Paddy on this, I don't see how boring out or replacing the TB with one 5mm bigger can make a difference if the plenum inlet is still 70mm. I assume it gets modified also? Regarding HP claims by NWP, I'd ignore them, considering companies like Takeda claim up to +15hp increase with their induction kit for the 350 and K&N are the same, yet cone kits like these have actually been shown to lose power. 1 Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 9, 2016 Share Posted July 9, 2016 As explained, an open tb isnt an empty hole, theres stuff in the middle that disrupts and restricts air flow That 5mm diameter increase, increases the surface area by 13%, the diameter change doesn't sound much but its actually a big change And nwp dyno'D the items back to back, its all online if you're willing to dig through Google 1 Quote Link to comment Share on other sites More sharing options...
jnoz Posted July 10, 2016 Author Share Posted July 10, 2016 I do agree with pretty much all the comment I'm seeing guys. Opening the entrance of a bottle neck indeed won't remove the restriction half way down the neck, the smallest point must indeed be increased. I need to get my hands on a spare intake really, and review how much it can be adjusted. I have a spare 100mm throttle body that would really allow a comparison. Obviously this is all expensive R&D just for a single thread. Does anyone have a spare throttle body for sale? Seem to be around 40 pounds on eBay. Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 10, 2016 Share Posted July 10, 2016 People tried a 90mm but you can't get it to idle and run at low rum There's very little material in the neck of the plenum to open it up common way is to cut it off and start again. Although the neck is 70mm the restriction is more so in the tb and the afm/intake Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted July 11, 2016 Share Posted July 11, 2016 free dyno time for anyone with a larger TB. 1 Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 11, 2016 Share Posted July 11, 2016 Was gonna speak to you about that Mark from last time you offered Soon havebigger maf and tb to go with my long tubes Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 16, 2016 Share Posted July 16, 2016 *drum roll* Last night I bolted the prototype adapter to the engine, with the larger throttle body, plugged it in and started the car. Idled fine and revved up fine (unfortunately for my poor neighbours) HUZZAH! Quote Link to comment Share on other sites More sharing options...
Rich260 Posted July 16, 2016 Share Posted July 16, 2016 Looking forward to seeing the results of this. Quote Link to comment Share on other sites More sharing options...
fake ben taylor Posted July 16, 2016 Share Posted July 16, 2016 There won't be any back to back dyno runs as NWP have already done that and this is the same as their kit and also im not on a stock engine anymore But to those who have seen the NWP kit or just want one, it won't be long now 1 Quote Link to comment Share on other sites More sharing options...
Snjur Posted July 16, 2016 Share Posted July 16, 2016 Anyway if you have digits prior this upgrade would be nice to what and how much improve does this makes on this side of the lake... Sent from my SM-G850F using Tapatalk Quote Link to comment Share on other sites More sharing options...
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