My NWP 75mm throttle body upgrade review
 

I got one of NWP's 75mm throttle body kits. He had some great claims and good research to back up what he was doing with the project. So of corse is the conquests of continuing development of the vq platform I was hooked. I knew this would be a tough crowd, and this is why I am writing the review. Most people with this platform discredit things for no other reason than it doesn't follow the normal cookie cutter build.

http://www.nwpengineering.com/Phenolic_Spacers.html
Dyno Sheet from NWP
http://www.nwpengineering.com/images...350z-NonRU.jpg
For those that haven't seen it here it is. 100% Plug and Play. No tuning or portwork required. Perfectly port matched. Features a tapered bore for increased airflow!

When I received the package from NWP I was thoroughly impressed with the quality of the adapter piece. Was machined beautifully, came with new hardware and additional gasket.

Install was as simple as unbolting the intake pipe removing the old tb, installing the adapter plate, new 75mm throttle body, plug in Voltage drop adapter harness, then re install intake. Defiantly a diy job with basic hand tools.

Initial Impressions: Car fired right up first try with no need to idle relearn, and a very steady idle, it didn't idle hunt like my previous tb. It was very steady.

First drive and rev ranges. The throttle response is fast and crisp. The butt dyno says that it is making power in the upper rpms, and did not feel any noticeable lost down low. It seems to be really pulling in the 5k plus rpm which is consistent with the dyno charts that I have seen from NWP. I will be doing additional testing in the next couple weeks and will eventual be doing some dyno testing with before / after and retune.

In closing, I am impressed with the upgrade and think is a very good bang for you buck that will compliment most other bolt on mods on the market. Especially those that are trying to squeeze every last drop out of there motor.

Note: If you are using t-bolt clamps and very stiff couplers you might need a larger size to accommodate the additional size of the new tb. I was able to stretch my silicon coupler over but needed a larger t-bolt clamp.

Side by side comparison of the stock vs the new 75mm Tb
Front
http://i42.tinypic.com/fwj3wl.jpg
Rear
http://i39.tinypic.com/xkod1x.jpg
Installed
http://i42.tinypic.com/jae0s2.jpg

Im going to buy one. For 365$ if I get 5hp ill be happy

In for more info and dyno numbers!
You are turbocharged also, correct?

I've been waitin on this review! They claim 15+hp but it's all in high Rpm's. what do you guys think it will do on a n/a z? Should be the same huh?

keep us posted, man. definitely wanna see those dyno charts.

Thanks Danny, sub'd for dyno updates

Yes I am greddy 18g, cosworth, bc stage 2 cams, 3" dp / exhaust.

Yes the gain are mostly felt in the upper rpms, from what I can tell. I know all there testing was on n/a platforms. So you should see similar gains to what they have dyno'd

if you post a good dyno....ill buy it! Want to see the gains with TT/cosworth and this TB.

Thanks! That's what I was thinking. I talk to the guys at nwp via Instagram. They tested it on a 06 non revup? I think. I want to see how it affects fuel economy and if the horsepower in the high Rpm's is worth it. But for the price, it's probably the cheapest horsepower you can get.

Op, how long did install take?

I can answer the install question...it's the same as installing an OEM throttle body except for the adapter harness, which adds on 5.8 sec. It's seriously a 20 min job.

in for #s

This mod is not going to kill fuel economy, unless you want to keep testing your new found power.

As said it takes no longer than 20 min with some basic tools.

Sub'd for dyno results

How is everyone getting theres before me ! I paid for express shipping and its not getting here very express :mad:

I will also be posting before and after dynos when I get mine in but I will be retuning for the tb

good review, now just need data to confirm.

too bad they didnt work with a much bigger TB. Its free to increase the duty cycle on the wastegate solenoid.

I'll assume this mod is probably a waste of money for low boost applications?

I have/had a 2006 Rev-up, which I realize is going to have a little more top end than a regular DE but that dyno chart looks phishy at best. My peak power on a stock baseline was at 6k and held flat to 6.5k rpms and my torque curve was pretty damn flat through the low to mid range. Granted it's been a while since I've looked at stock DE dynos but, eh. I want a 3rd party dyno chart.

Just ordered mine! Hopefully it'll be here by the end of the week.

I'll let you guys know how it feels on my Revup.

Here are my engine mods currently:
Furookie Intake
Non-Resonated 2.5" Test Pipes
Invidia Gemini Exhaust
Motordyne 5/16 Iso Thermal Plenum Spacer
Motordyne MREV+ Intake Manifold
Motordyne Copper Iso Thermal Upgrade
Cobb AccessPort

+1

I wonder if the throttle body itself has more smooth control or anything over stock that would help with power delivery for a boosted car going from vac to wot.