I just had my car tuned an dynoed at Zcar yesterday after they installed my Unichip. The result was not what i expected from all of the NA mods i have put in. Lets just say, it was quite a waste of money. I'm not sure now if i really want to stay NA for long. The first two graphs shows before my Headers and Unichip tune. It was only with AFCII tune with intake, Kinetix V+, Strup tp, and HKS ti; and i was already putting down 244whp and 235tq. The last three dyno charts were after strup header and Unichip tune. It put down only 246rwhhp and 235 tq to the wheels. I'm not sure what happened, but i think i might have actually lost power after the headers were installed. I'm not positively sure, but thats what one of the techs said. I thought headers were suppose to yield some power, but for some reason i didn't with me. The car actually felt very smooth, and the power was more apparent because of the AF adjustment. I was hoping to break into the 265-270 whp range, but . A huge thanks to Zcar for the work and Rob. What do you guys think happpened? I just need some explanation to why i only made 2 whp more than before the headers. Any suggestions would be appreciated.

 

Not nice.. .. You need a scanner though.. Also Unichip, id say Utec bro!

 

ur pics are way to blurey to tell

 

hmm, its very odd, was the dynos prior ot the header and unchip dyno'ed at ZCG as well? Although i didn't look a the graph but is the power increased in the mid range? These headers aren't made for dramatic top end power However if only a peak of 2hp was only made and everywhere else in the powerband stayed virtually the same then as much as i don't want to say it but you may want to bring it back to ZCG and ask for them to retune your car. There is no way a header like strup can only yeild you 2hp at peak power and not gain anywhere else. Again, you may want to look at the overall power band. If you gained a good 10+hp across or around midrange then a peak hp of 2hp isnt bad at all.

 

I actually compared two graphs side by side, after the headers install and tune, i actually lost power throughout the power band. I actually put the new dyno sheet on top of the old sheet and put it under a light.

 

Do you have the rev-up motor? I had an 03 with all NA mods on my car except cams and I wasn't happy with the unichip tune results. I had an 03 and I believe my uncorrected #s were 260 or so, but corrected it was in the high 240s i think. I should have listened to everyone on the forums who said not to waste money on NA mods. Only way to get big power on the Z is FI, and its not cheap! One of the reasons I sold my Z.. It was a great car, handled like a dream but just not enough power!

 

Hate to say I told you so...

Time for some snails.........

 

Yeah, i have an 03 a well. I would think that headers would yield me more power, but i think thats not the case since the stock ECU will learn and pull timing, which sometimes, can loose power. I'm seriously about going FI now.

 

Go FI, otherwise your wasting cash on NA mods that will not deliver the goods , which you will end up selling for a loss if you go turbo(headers for ex..)..

 

I hate to agree with Alex but go FI.

 

man, that sux...a stock 07 could probably put more ponnies at wheel

 

Hate to say it, but its so true.......time for some snails.

 

something isnt right, when i had my G35 i had i/e/hfc dynoed. Then i added some dc headers then i dynoed it again. It gave me roughly a nice gain int he mid range and in the top end i didnt gain too much. This was all without a tune. Based on my experience i can only tell you should have at least gained power in the mid range.

 

Another thing is, I still have my AFC connected to the stock ECU. But its set at Zero. Basically it doesn't do anything. Rob told me it won't do anthing as it will just read the knock and some other things. What do you think? Should i remove it? Do you think since the AFC is till connected to the ecu, has it affected the tunning capability of Unichip?

 

Sounds good! going 4.2 too??

 

If the AFC is zeroed out it shouldn't be doing anything, but if it's not doing anything, why not just take it out? Are those pics from your cameraphone or something? It looks like you're running mid to low 13:1 AFRs tapering towards 12.5:1 at redline?

I don't think you're gonna get to the 260-270 range without cams. You need snail power.

 

Yes, its camera phone. I will show you the dyno graph when i see you at the meet. You going this week? I will let you be the judge when you see the dyno graph. I honestly think the header was a huge waste of money

 

Not sure yet on the meet. It might be a wife night out. Was thinking of having some guys over and installing my new suspension this weekend though, so if I can't make the meet, you should totally come over for that.

Were both your dyno runs (before and after header) done on the same day?

 

No, the top two were before headers and unichip. The bottom three were after.

 

Well if the runs weren't done on the same day it's really sort of tough to tell if you actually lost power. Can you datalog your timing with the Unichip? I'm curious what the timing map looks like.