hey sorry man, but but how much WHP did you think you were going to pick up? Those mods together would net you "maybe" 5-6 over stock. At least thats how it worked for me by differnece was in the mid range and throttle response. but to be at 305 WHP and not have headers is about right. Remember all these other people "including Z1) throwing dyno numbers around dont mean squate. Every dyno is different, IMO most places inflate numbers to make customer happy. ( 341 WHP NA 370 Sure)Dyno's tell you almost nothing other than your tune is safe cause you can get the car up to 120 MPH for tuning and not worry about crashing. You wanna see what your car really makes hit the track and take you 1/4 times and MPH with you curb weight and figure it out. If you happy with the way the car performs on the street then be happy, chasing dyno numbers will do nothing other than upset you casue no ones is the same.

BTW I have every bolt on and ECUTEK tuned by Seb and we all know how good he is and my dyno told me 314 "uncorrect". But thats just want a machine told me, I will compare to my track numbers last yeat of 13.5 at 105 MPH (3800 LBS) X sedan.

While I understand what your saying I'd like remind you I lost 7whp by just putting the plenum on. I installed the lower took the car for a run and was down another 5whp. When I reinstalled the stock plenum I gained 5whp. I understood I probably wouldn't make much, I just didn't expect to lose more power than I made by installing test pipes. I didn't expect to lose power period...

Any news on this?

Yes, I lost a lot of money and power. Z1 took their parts back but they wouldn't give me my cores back, so I had to go source new cores. Total cost between Dyno runs and used oem parts to prove I lost power $360. Total loss of power with the plenum and manifold was 10whp. Now I need to have my car retuned for the stock manifold setup. That will be another $300. Honestly the frustration of all of this has me seriously considering selling my car and moving on to something without a plastic clutch slave cylinder. Maybe it was a fluke that I lost power but how would you feel if you spent over $600 on parts that lost you 10whp. I would not recommend buying these two pieces.

My buddy installed ported lower by sync and lost 10whp 15ft tq, but wasnt tuned.

If you're looking for power stop wasting money on every bolt on in the, market. Just go forced induction. Bp makes a reasonable price kit

Ditto

Wow! You already have a license. Most retunes should be an hour or $100!!

I've got nothing to say on this though. I've paid for a few guys licenses and all made power by running the car and tuning, installing new within an hour and running again. Maybe they weren't port matched as a set and lips were formed.

CSC does suck!

Yeah the tune is good. I used a reputable tuner who has tuned many 370zs and GTRs with ecutek. I get the Bp kit and was really thinking of heading that direction but between this and watching a few friends seriously struggle with their CSC it's got me seriously considering going a different direction. I love my z but I'm beyond frustrate from this whole ordeal; losing my cores and having to source new ones really rubbed me the wrong way; also I live in Alabama and you don't make friends in the southeast z community by questioning Z1. That's soured me a lot to the commuity down here.

Did you have throttle bodies?

No stock throttle bodies.

Give a bit of time, we can sort the car out. The CSC thing is an easy fix.

I helped work on this car through the testing. I can vouch for the fast it the testing was done correctly and the car was running with a spot on AFR. It's a shame to see a car lose power with mods and then not get any answers as to why.

Dang, glad to see this as they were my last couple things before a tune. Sounds like I'll just throw on the RHFC and grab the Osiris Tune. (only because its an 08 and ECUtek cant help me :/)

Yeah we simply lost power with these mods. Trust me I would have loved to have come back from my tune with rob and said I gained 10whp and was sitting at close to 330 with my build but I found myself in 306whp range after installing these parts. Again this could be a fluke. There may have been something that went wrong in the manufacturing of these parts. I'm not implying that Z1 is a bad company or that the same thing will happen to anyone else. This is simply what happened to me and my car. I hope this thread is of help to others. I wish I knew then what I know now.

I made 334 with fi long tubes fi cbe and g3's

Bump

Lol smh.. abt updates? What's new to the setup?

Want to eco your sentiment regarding Z1. I don't post here basically because I got burned out on overstated false claims and things that frankly did not even work on these cars. (like my Cobb tuner) At one time was sponsored by a dyno shop and my personal cars have over a 1000 dyno pulls so not exactly a newbie to the game. Do my own port work on intakes but let the pro's with flow bench's do my heads.

Recently ordered some parts from Z1 and at first went well, but turned into a Chinese fire drill of incompetence. This Russ guy seems to not be able to find his *** in the dark with both hands. He tries to upsell ya on everything. Wanted to replace the shocks on my Z and Russ instead of taking the order, tried to upsell me on coil overs which I do not nor did not want. He didn't even mention they sell shocks so I ordered them from another vender. Only found out later they have the same shocks on their website.

Received double orders of the same product, etc. Much more that I won't bother to go into. The bottom line is I'm so upset with Z1 that I didn't even return the duplicate, will just sell it. Will never do business with them again.

I believe every bit that they would try and gig ya on ported intakes. Porting is a science using velocity rods and flow bench's to determine where to or to not remove material. Just polishing or smoothing does basically absolutely zero. Removing a bunch of material enlarging the diameter will reduce velocity, thus reducing power. Bunch of flakes in the hotrod business.

Denny