I run Stillen Headers ceramic coated,non cat,INJEN duals,UR flywheel and UR kit pulleys,Crawford plenum V5,Lower 05 track model plenum(mine is touring 04),custom ground kit.Thats my mods,please estimate!!!!!!!!Also my engine light it on because i dont have cats on,i run 0,8 too rich at nearly 6600 and my dyno showed 34NM and 294HP not WHP.

 

Hi Arletos..

 

294HP = ~249.9WHP

Considering the 15% lost.

 

Thats a waste of money on mods. A guy with testpipes, intake and exhaust just dyno 246.
https://my350z.com/forum/2003-2009-nissan-350z/128756-dyno-my-2003-z-with-mods.html

 

I donno about the numbers being low...

With my mods. I dynoed 239.5whp with flat A/F of 13's at the SoCal dyno day... However, Im rolling on 19" tho.

 

Hi *** and everyone

My next plan is to remove the stillen test pipes and put again the stock cats,so i propably wont have the engine light ON and also the fuell curve change to leaner for more HP.

I must remain u that i dont have reflash it wet,still on factory programm,my deal is to go with redline to 6600 as stock is up to 310hp or 305 at crank always,Do you have any suggestions about that or it is impossible to be this happend.Also i must tell you that here in Greece our gas stations sell 100octane fuels such BP and Shell and EKO.My HP went with 100gas station fuel EKO,the best as our auto magazines have tested.Your comments......


Still 100octane and the f...engine light is on...so the Stillen test pipes propably gonna be off

 

hey do the cel fix
two packs of 18mm non foulers drill out two of them with a 1/2 drill bit then strew the drilled out ones into the non drilled ones and screw the o2 into that.about $10 for both sets of non foulers.it worked for me.

 

What I heard from people on this board said that the 05 lower plenum doesn't work well with the crawford plenum. They actually lost some power If I remembered correctly. Do some search on it.

 

I think to mycar the the two plenums working good,i really having these feeling specialy up to 3rthgear.A non fouler what it is?please tell in other words to find it.

But i still thinking of getting on cats

 

So,my stock cats are on by friday...friday night i left unplugged the battery to clear the CEL light and the other day after an hour it blinks ON.....have any suggestions about it?Maybe the Lamda are off?

Also right now i think i lost power,especially in 6th the car is not well responding as it was

Sorry about my spelling boys and girls,OK!!?

 

Get the CEL scanned to find out why the light is on, it might be something else. I had a CEL with the addition of my test pipes, after one reset, it never came back.

 

the ses affects the performance. 13 af is not soo good... time for a tune to get that down a little... some where in the 11's or 12s and you might notice some more hp.

 

You should get a reflash on your ECU to fix your a/f.. www.technosquare.com

 

With stock cats on the CEL came on again,so today i am planning removing them as also the car fell weak and heavy loaded at 5th and 6th which means had lost power/torque.Now my plan is to do a TC reflash but and OEM one not a specialy tune for my car because of the problem that there is no dealer for Technosquare here in Greece to proper reflash my Z on a dyno and then on street...too bad too bad and then go for some cams maybe TOMEI 268 with the special FERRERA valve kit,too pricy but i think it might worth it



Have you any comments about the Ferrera valve kit?is it good for 7200-7100 or more ????????????are the valve springs right for these heads??

 

I got 262rwhp with Injen Exhaust, new Injen CAI SP1985, and Helix Test pipes.


Wait people have lost power with the Crawford plenum on 05 Zs? WTF?! I just ordered my crawford plenum.. i better not be loosing power.. i better be gaining some good power!

 

People saying that on track 300hp 05 model with crawfords plenum loosing power but i am not sure if this is really happend...maybe torque yes but HP not really.....but to my 04 touring orange pack with the heavy 18 wheels gain power/faster times to 0-400m so mean YES power it is here

 

Ooo ok, well i have the 05 Touring, so there is no engine diff compared to the 05 Tracks.

 

The 300hp model with the 287hp have some minor changes,to the rod bolts i think,to the ecu(7100 redline).So,back again with test-pipes with resonators and the car feels good




About the Ferrera kit anyone?

 

The 300hp motor DOES NOT lose power with the crawford plenum. I put one of my car and gained about a good 8rwhp and I could feel the difference. My dyno is in the picture link in my sig.

 

Hrm.. but 8rwhp isnt that great to what it claims?