GIloveMyCar: Let me konw how your install geos and if it will fit under the hood... cool mod Im itching to do sum engine mods..

 

Here's a link to the place selling the modified plenum. Note that the Coupe and Sedan versions seem to be slightly different.

http://www.crawfordzcar.com/

Another interesting read there is in the R&D section, where they explain how our ECUs cut power on them when they combined their modified plenum with a prototype set of headers they're working on.

I'm definitely not happy with our ECUs. That thing has to go.

-Jack
Obsidian/graphite '03 Coupe premium nav

 

Just put the Crawford on my "G" 2 hours ago. Now the sucker pulls strongly all the way to redline. I'll report more as I put some miles on it. But gawd if now feels strong. I also have a home made Dual exhaust with a Magnaflow X Muffler, "Z" intake tube, K&N Filter, and a five ground wire set. BTW, I have never reset my ECU, and have never felt any power loss with any of the mods I've done. The car just keeps getting stronger, and stays that way.

Lou

 

I installed my crawford yesterday, wwweeeeeeeeeeeeeee.
Engive cover can sorta go back on. I but it on, but it has to bend inorder to do so and theirs a unsightly gap now between the cover and the engine oil file car and rubber sleave. I hope to fill the gap with a piece of black pvc pipe.

Ivry 6mt sed
Injen CAI, 22" resonator
8X18 Enkei RPM2 45mm
Kumho MX 245/40
350Z springs&struts
Crawford intake pleneum

 

Gsedan35,

Any concern with the dealer making a fuzz because of the change? I am afraid that if I do this mod that they will not honour my warrantee and I would hate to have to put the stock back on.

 

Wondering if they would do a group buy? $500 seems just a tad high.

 

The problem here is that you are sending your plenum to them, you no longer have your stock plenum to put back on.

Luv My G

 

A new plenum is only $250

 

can we do a group buy ill def be down for that... i just want to see some hard numbers first you know. Someone saying power goes up just isnt good enough i want HP and TQ figures to gaze at.... but based on the assumption that it helps the car take in air that pushes me...

 

GIlovemycar,

Is the $250 price for a complete upper/lower plenum (or collector in Nissan speak)? If so, please provide your source.

While Crawford's doing a great job with their modification... it's not "stealthy".

I believe the air flow can be increased and balanced to each cylinder by differential porting and/or hydro-honing the lower collector and polishing the upper collector.

DaveO

 

There were some dynos either on FA or at my350z.com Basic gist was 5hp at 4000 all the way to 20hp at redline.

03.5 Sedan AT (Black-Willow-Premium-Sport-Aero-GG Grounding Kit)

 

The price is for the upper plenum from Nissan.