What was the turn around time for each?

 

If there is enough interest in the Extrude Hone process, I might be able to get a group discount from Rick Miller.

Bob

 

2 weeks on the Extrude Hone process and about 3 weeks on the throttle body.

Bob

 

Whoa.....I was hoping for a bit less being as my z is my DD. Still interested and if you can get a special I might be in.

 

Here are the torque and AFR graphs I promised. The first of each is the modified vs modified + TB + Extrude Hone. The second of each is the modified + TB + Extrude Hone vs the same + the 3.5" intake tube.

Bob

 

So after all those mods and money spent u have 260hp?

 

They were off a little below 4500 and off significantly above 5500. I relied on some help from the dyno/tuner guy. I had asked for his help tuning the car when we switched to the 3.5" tube. I was told ahead of time this would pose some interesting tuning challenges. The TB and Extrude Hone tuning I could have easily done myself.

Bob

 

Thanks again for answering all of our questions. This is a very good post.

 

 

Looks to me like there is still room in the tune for more power. Fuel curve leaves some to be desired, and I don't know how much timing he is using. 261 is reasonable.

 

Yes. I am more interested in the difference from stock since some dynos read higher or lower than others. On this dyno stock rolled in at 220.

Bob

 

Any suggestions on tuning? Fuel curve is somewhere between 12.8 - 13.2 across the board with the AFR corrections data logged from Cipher +/- 4%. Always open to suggestions, especially if it brings me more power.


Sorry for the edit. Timing is the base timing map that Uprev originally provided for 92 octane fuel. I have a more aggressive timing curve for the 100 octane race gas.

Bob

 

The AFR looks perfect for NA. Timing and intake cam timing could be adjusted but no way to know unless you get it on the dyno with someone that really knows Osiris. Dave at Function Tuned I think may be able to help but I don't know how much he'd be able to improve upon it. I think the torque curve looks excellent for a DE motor already.

You could ask UpRev for an e-Tune that is a little more aggressive with timing and see if it helps. If it doesn't, I wouldn't run it as it would just be bringing you closer to the knock threshold.

Really nicely documented project - kudos!

 

Thanks for the kind words. Cam timing is up next. I will try to extend the rpm range of the torque curve by tweaking the cam timing.

Bob

 

My mistake I was looking at the blue line. The red (new) line looks fine. Your gains are truely excellent for the mods you have. I would also recommend Dave at Function Tuned.....he seems to find power that others don't. I am almost 100% certain that the uprev reflash is sent with stock timing. As stated above it is impossible to accurately advance timing (without potential issues) without the car on a dyno. What were the results of when you tuned your car with extra timing at 100?

 

Np and thanks. I had asked the Uprev guys for a recomendation for tuners and they said Dave at Function Tuned and the R/T ? guys from Landsdale, Pa. There is nothing like real world feed back on tuners though. Didn't try the 100 octane map since i didn't have any 100 octane gas. In the past, on the dyno, the high octane map loses power on 92/93 octane gas.

Bob

 

Interesting....Dave is good people and a great tuner. I haven't heard much feedback on R/T, but it might be worth the drive down to VA for a great tune. Just a thought.

 

Vince at RT is a top notch guy. Going there thursday the 11th to tune for the z1 maf. Hopefully crackin this 300whp n/a thingy. I am going to be bringing a camera this time so pics and vids. Cool thing is vince likes tuning the n/a stuff because he likes the challenge.

 

Be sure to let us know how it goes. Any other changes aside from the maf? When you were talking about porting of the lower and upper plenum is in general what you had in mind? I will put out a preliminary est of 303.4whp (I like to be specific )

 

I did a whole lot of hand cleanup work on the nonrevup lower plenum and then went over all the runners with 100 grit so it kind of looks like the extrudehoned lower but probably not as nice. I like this thread because I have always wondered what kind of gains there were in doing this kind of work and wonder if they would be amplified in my build. On a side note the engine is now thoroughly broken in. 3k miles and 2 track days of thorough thrashing. It takes me like 10minutes to swap throttle bodies and I have a proflow 72mm I might do a run at the end of the tune to see if it makes a difference worth tuning the etc table so it drives like stock. Can't wait to see the results of this thread with the crawfords.