that's cool, have you had any luck with closed loop? I never could get it working. open loop works real well though.

a tps is really only useful if you have a tiny turbo you don't want boosting all the time.

 

i'll have specifics later, with pretty charts and all, after I get home. I will go ahead and tell you we broke 250 rwhp on the dynapack on a rich tune @ 14 psi

 

awesome.... it'll be exciting to see a what a dyno-tuned turbo timing map looks like.

 

need dyno time now!!!!

 

Wow!, great numbers Ben. I really got to get that clutch and diff in my car so I can up the boost. I am way behind with my 180 hp at 7psi. :gay:

Are you on the stock diff still? or have you upgraded to a 7" unit?

 

227.1 wtq / 255.4whp were the final numbers with a spike to 15psi at about 4000 followed by a pretty even 14psi to redline.


Here's the chart showing what we could do with the MBC (dotted lines) versus the MSPNP's EBC.




How's it feel Ben? Felt good to me

 

looks great, what injectors are you running ben?

 

RC 440s. I'll have datalogs later...

Didn't get a chance to open her up on the way home. Bumper to bumper the WHOLE trip. I did make the BOV scream for the ladies under a large bridge though. Low speed cruising and stop n go, the MS did great.

Gonna go for a ride after waiting another 30 minutes for traffic to die down.

BTW, the dyno operator Scott took the car for a ride and came back grinning like a chesire cat.


Ben

 

Give us some details on the tuning process!

 

440s huh i'm curious on your duty cycles

 

Which downpipe are you running? It looks like my car spools a little before yours and I'm wondering if that is why. I have full boost at around 3250 rpm with the turbo tony dp.

 

Just looked this over, and the datalogs are reporting 72% but that's not right. The REQ_FUEL we used is off a bit from what it should have been which won't hurt anything, but will make the DC reading inaccurate unfortunately. Doing the math though these injectors are maxed out for sure... IMO I'd go with 550's to put this kind of power down with stock fuel pressure and keep the DC's in a good spot.

The REQ_FUEL is off due to an oversight... we tweaked it earlier this week as a quick fix to get the car driveable before tuning, and should have set it back today before tuning to be honest... not a big deal but it does effect the DC readings in the datalog. I have to take the blame here... I honestly thought the map we started with this morning was the base map I setup for 440's from BEFORE we tweaked the REQ_FUEL as a quick fix, and I should have double checked it...

 

Can you post correct injector settings for RC 440s? I might be installing mine this weekend (2000 motor).

-Mike

 

The MS does a great job on the power runs. Unfortunately everywhere I went yesterday evening I got stuck in awful traffic and/or behind old ladies. Coupled with the fact that the car is so fast now, I run out of room quickly. Maybe tomorrow I can get a long full WOT pull in.

That's too bad about the IJDC. I have to take blame there, too. Afterall, I was the guy who made the car run on 440s by moving req fuel until it idled well It would have been nice to know real world duty cycle. Before I used those injectors I calculated 85% max dc @ 250 horse. We did hit a little more than 250 and we are running a tad richer than I calculated for though, so maybe it's upwards of 90%.

Brian, 2.5" tony dp transitioning to 2.25". I'd be sure that your car has a better FMIC design and larger exhaust. 6" rear. Still haven't had a good WOT run, but so far the car pulls hard but the gears are short. I actually just got an offer on my 7" hybrided miata/rx7 LSD swap, but me thinks at this point it would be smarter to keep it. On the dyno we did a wastegate basline run before setting the EBC, wg 6 psi did just shy of 170 rwhp. As a marker, 3k miles ago with the bandaids I hit 165 rwhp on 7 psi on the dynojet in a COLD room.

 

Pretty much the same as me on exhaust, my FMIC may be a little better though. You better hang onto to the 7" RX7 unit because you are gonna need it at those power levels. Your diff has to be a grenade right now.

 

Explain why the MBC wouldn't hold the peak boost
Did you make any adjustments to the "aggressive" PnP IGN map?
Richest AFR was 11.5:1 at peak boost - 16psi?

 

Probably the same old story with the greddy wastegate....needs a helper spring.

yeah ben, we need answers!!!! got a datalog of the last few dyno pulls...I'd like to look over them in MLV.

 

Yeah, get 'em to brainy so he can start building the datalogging and tuning FAQ

 

This stuff is exciting...but I'm in STL and won't be back to keep working on my car until Monday :(