Thanks

 

I would not worry about a 8lb-ft peak tq loss, this is probably caused by a bit of lag due to the larger fmic. You have 340 whp so you do have more tq across the powerband HP= (TQ X rpm/5250).
If you have adjustable cam gears you may want to advance them 1or 2 degrees ie go from -3/-3 to -2/-2 to gain a bit of tq early but you may loose some hp up top.

 

enjoy the rain guys

 

He also runs a cat. Swapping in a test pipe would be worth another ~15whp. Also, the EBC that he is running hits 21psi at 4000rpm but 23psi at 5500rpm. If it is set up to run 23psi at 4000rpm (for good peak torque numbers), it will run too much at 5500rpm. This is one of the advantages of actually being able to tune the boost curve with the XEDE.

-shiv

 

Shiv,

I am sold on removing the EBC and will do so for your next visit to NJ. However, do you think that I have a boost leak or some other issue that would actually cause me to loose tq vs my prior tune after 3800 rpm?

I also noticed that my hp and tq curve cross on my prior tune at about 5800 (I thought they were supposed to cross at 5250)?

I am looking forward to seeing how the VIIIs do today.

Thanks for your help.

SF

 

HP and torque will always cross at 5250. Sounds like your HP and Torque axis are scaled differently. Take a closer look at your graph. Your torque numbers may be higher than you think.

shiv

 

5252



d

EDIT: 5252.113122032546 actually, given a 64bit approximation of pi.

 

Shiv,

I see why I was confused by my prior graph. The X axis is scaled in "speed (mph)" and the new graph is in rpm. That makes it very difficult to make a meaningful comparison.

SF

PS: How are the guys doing today?

 

Ah ok. I'll be taking all the results home with me on my usb drive. I'll zip and post them up next week so you can view yours with Dynojet's freeware run viewer. Everyone did well today. Stg 1+ cars were in the 340-350whp range on pump gas. One White Rabbit Stg 1+ did 360whp on pump and 405whp on race. I think this is the first time I've ever tuned a WR turbo that worked that well. We were all pretty shocked

-shiv

 

Actually, the comparison is not that difficult. The data on the X axis (speed) covers approximately 52mph and the data on the X axis (rpm) covers approximately 5200. It looks like, for third gear, [(rpm/100) + 6 = mph].

It looks like, while gaining a little peak hp, I have lost significant area under the curve for hp and tq.

I will check for a boost leak when I have a chance.

SF

 

thank you shiv for your excellent work! boy did you look tired today
thanks for your patience while i hooked up that nest of wires
thanks to jeff, diesel and everyone at tt for hosting.
have BIG fun in ohio shiv!

 

Well, I gotta say, what a fantastic day. There are many things in life where the legend is let down by reality but clearly, Shiv's abilities live up to the hype. His work on my Mazdaspeed Miata has it absolutely singing.

Laugh if you will at my mere 202 rwhp and 199.92 torque (Huge improvements over the 181 rwhp, 180 tq untuned) but at 2529 lbs, my car now has a better power to weight ratio than a new Porsche Boxter S, the original M Roadster, and even a Stock Evo IX. I'm not Evo bashing as I have an 03 Evo 8 but I got to say, this thing pulls just about as hard (Evo has TBE and flash). The numbers are only part of the story as the driveability is phenomenal. Pull all across the board. Visions of a fully prepped SM2 car are now dancing through my head. Hmmmmmm....I can't stop grinning

Shiv, thanks for your patience in getting me the kit and for all your hard work tuning it. It was a pleasure to meet you and I'm sure it won't be the last time.

Troy, thanks for organizing everything. Your efforts were much appreciated.

Big thanks to Turbo Trix for letting us use their awesome facility. Glad I have you guys nearby.

Great meeting everyone. Great bunch and some sweet cars.

-John

2004 Mazdaspeed Miata
Vishnu Stage 0
Flying Miata Turbo back exhaust (with cat)
202.05 rwhp 199.92 tq at the hands of Shiv

 

All,

As soon as I get the results from Shiv, I will post in the Thread Starter.

It was great meeting everyone - Thanks for making it one of the smoothest Events I've attended

Thanks, Troy

 

You got that right

 

john, it was great meeting you. love that little car of yours. did shiv give you a flying miata sideways test drive