I finally got around to doing another dyno since I have added some new parts. The mods are in my sig. You can see that there is a big difference in power between 3500 and 4500 rpm, aswell as up top. After that It starts to get kinda rich, alittle to rich. I am thinking that a good reflash to get the A/F ratios down to spec would do wounders, hopefully.....

Blue = Current
Red = Just plenum
Green = Stock

A/F ratios are written on the bottom of the picture.
http://community.webshots.com/photo/...38370850lJWBTB

INPUT WELCOMED!!!

 

Good gains, but you would think that you would gain more with the headers, cats, and exhaust. I agree about the tuning, I think it would help.

273 is definitely good power.

 

Those are very good gains with your mods! Nice #'s!

 

thats sick, i need to dyno my car to see what gains i got from the crawford package

 

It is good power, but I really believe that it will yield more once we get the a/f out of the 11s. I might tryout the Crawford throttle body and then take it to AAM.

 

Crawford is doing TB's now? Your gains are good, with a good reflash you'll pick up even more. I picked up 9whp/12ftlbs with the Technosquare flash.

 

Nice looking graph, great numbers!

 

Yeah, they started boring them out to 73mm I believe. I saw one at the shop and it looked really nice.

 

Holy crap! Are you going to add cams? I am willing to bet with a good reflash and some cams you will be around the 300 rwhp mark. Keep up the good work. I really appreciate the info on the 05 track engine.

 

my car ran rich, and i didn't get much from a reflash. i think if u r runnin lean u would. who knows?

 

Isn't the traditional thinking with mods that you make more power with increased air flow and the corresponding increased fuel? So I would think that if you ran lean due to increased air flow, then when you increased the fuel delivery you should make more power.

My car is definitely lean with all the breathing mods I have, so I need to add fuel. I didn't make any power adding a Y-pipe and B-pipe, only got leaner, so I think I've maxed out on what the stock ECU can deliver in terms of fuel. I'm still waiting on better options for ECU tuning/standalone units.

 

TheBigShow was saying that because I am still running pretty rich even with all my mods, he is not sure if leaning it out will give any more power.

 

that's what i just said.

 

cams will lean you out a bit, especially if you go big

 

thanks. i think u'd see some, mayb 5hp or so. plus, it would keep your tailpipes cleaner.

 

Haha. No need for a reflash. Ill just get some big cams.

 

I thought about adding cams, but then the warranty flahses in the head. No problem on the info, glad to help out the Z community. I am going to try to hit 300rwhp without cams. I might tryout some testpipes, throttle body, and a reflash to see if it gets me there.

 

Not really... the exhaust mods (especially the headers) are not going to add a lot at peak HP or high rpm. They have a more notable impact on the low to mid-range numbers, especially torque. Note how thawk's lower powerband increased (blue line) over the prior runs both stock and with the plenum (green and red lines).

I saw a similar impact when we swapped the Crawford headers onto my car (I already had cats and Borla TD). The before/after dynos showed an 8-10hp increase and as much as 20ftlbs increase up to around 4500rpm. Above that both measures only showed gains of around 5hp or tq.

 

HIGHLY doubt it-but good luck....Id say with those mods and cams, your over your 300rwhp goal, that would be one bad a$$ NA Z.

 

Do you have a link or some pics of the dynos? I'm seriously considering the Crawford headers, but there's alot of conflicting info on how much they realistically add.