This was a modification done on the supercharged 4.6L cobra motors. Worth about 6 to 12 horsepower. I will pull off one of my throttle bodies and see if any clean up is needed - maybe not?

 

Won't help this car.

 

well, it could probably help this car if done in conjunction with a larger maf housing and with a larger plenum neck opening but i dont believe anyone has tried it...

TB, plenum neck and maf housing measure to 2.75 inches, so if you do one, you need to do them all

 

Its been done, and its alot of work for the gains. (big mouth plenum, large TB, large intake tube w/ MAF)

One of the major issues is when you change the size of the MAF tube, you need Utec or EMU or some way to retune the car. It really messes up the tune when you change the tube size. It will not run on a stock ecu.

 

Good stuff!

 

I have mine 'ported' and it made a nice different in the smoothness. NO DYNO (sorry folks)

it wasn't ported in the sense of making the whole opening larger, and I retain the stock butterfly... WRPtechnologies (screenname: Wperdigon). I don't want to give away his technique, but it uses the same idea as the JWT intake...

It was very cheap as well, under 100 bucks and I noticed a smoother characteristic afterwards, especially in the higher RPMS.

 

Does he have a website?

 

yeah he does, letmecheck. he just had some parts featured in Sport Z Magazine he developed...

http://www.wrptechnology.com/

the website is not fully built yet (looking at you sean ) every tab directs you to email: mailto:sales@wperdigon.com but you can PM him on this site, or at fresh alloy where he is a moderator.

 

interesting. I might look into this..

 

I would recommend him. he is also a member of my car club (not 'my' car club, but I'm in it )

 

It looks like its been tried a few times on the DE motors (a guy by the name of aceman or something along those lines? as well as Crawford)

I don't think there was any real conclusion from it though dynowise...

 

There was a huge article in D-Sport about porting a month or so back, might help you learn a little, but the i'm not sure about anything really being done to a VQ.

 

Anyone in S. Florida can use my car as a test car. It's not my DD. FYI

 

Hey guys -

Yes the throttle body porting does work, it espicially works on the QR25 ( I know it's not the same engine), but the technique is the same and results tend to be a smoother and faster rev in addition to 2-4 hp more. I dyno'd with the Sentra community and these where the results -

I am still building my website, so please bear with me since it's not listed on the site - but I do offer it and it's 65 dollars to have it done -

Turn around time is usually 2-3 days - pm me if interested

 

2-4 hp gain? Most members, including myself on this forum would constitute that as just dyno fluctuation margin. Too many factors to test a mod like this, IMO. Not calling you a liar or anything, but im not sure minor porting will gain much or be able to show measurable gains on pretty much any dyno...

 

A Throttle body spacer will work, but porting doesn't on this car.

 

I had my Throttle body ported by proflow design.

here is the thread

https://my350z.com/forum/intake-exhaust/223208-larger-maf-housing-intake-pipe-and-tb-installed.html

Stock figures are:

Maf ======== 72mm
Intake pipe ===72mm
TB ==========70mm

Larger Pieces

Maf =========80mm
Intake pipe====85mm
TB========== 2mm oversize at 72mm, with the inlet enlarged to 78mm.

And im using the crawford big mouth plenum tuned with a UTEC

And still no dyno to prove anything

Later
Todd