The Cobalts have more bite than the EBC yellows I tried previously. I think the PFC have a higher initial friction level than the Cobalt XR3. Maybe too aggressive for HPDE?

 

ugghhh what? pfc's have a low initial bite.
you don't match the pads to the event, you match the pads to your tire.

 

Bought the TSE BBK with Dynapros!

 

^that is from using the wrong compound. too low of TQ. the tire over powered the pad temperatures skyrocketed and melted everything.

 

No. It was from using brakes (specifically rotors) that were too small for the application. Those were high-end race pads with an MOT of ~1650*F.

 

define "high end". i have seen this happen with pfc pads but nobody is saying what the compound or brand is. a small rotor will not help with temperatures either.

 

Not interested in saying which pad, because people will misinterpret those photos and think poorly of the pad brand/compound when the reality is that no pad would have withstood that abuse. I do not sell the brand, but I used them in Wilwood calipers successfully, and they are extremely popular in the Miata world.

 

I have to say, that despite the knocking that EBC pads get, my EBC yellows looked much better than that on 1.6 rotors, when I removed them. Granted, I'm not the fastest driver but my co-driver is pretty darn good so I know he put some heat in them.

Cobalt XR3 are a medium torque pad.

Here's Advance Autosports take on it...

"The new PFC compound was supposed to replace the PFC 97 compound and be comparable. The 97 compound was made unavailable. After running this new compound in 2014 the verdict is that they aren't as good as the old 97 compound. Advanced Autosports was able to convince PFC to make 97 compound pads for us because of the feedback we received from our customers. We will still be selling the PF11/PF14/PF08 compound pads, but we recommend you purchase the 97's instead."

I dunno.

 

Here's Cobalts pad list and what competitor pads are comparable.

1994-2000 (Cobalt-Optimized pad design)

The Cobalt XR3 and PFC 97 and I assume new 11 are listed as comparable pads.

 

Let me tell you about EBC Yellows. They may last and apparently handle a lot of heat according to EBC's graph, but they have no good characteristics in a track pad.

Here is my experience with them on the Lexus:
-Their initial bite was worse than the AC Delco $20 pad that we used to test fit our new pad shape.
-They required ALOT of pressure to stop, so low COF.
-They increased pedal travel considerably at the same braking force.

 

I don't have an issue with initial bite on mine, anything on my car will require a lot of pedal pressure due to setup, and i don't have much pedal travel to begin with.

That said, i would NOT recommend anyone use these on a Miata. There's better out there for similar price, they DESTROY rotors at a rate that's hard to believe, and the cold, lukewarm, warm, and almost hot performance is incredibly terrible.

They just flat out don't work until they're almost smoking. And when they're not smoking, they're working as a cheese grater on your rotors.

 

EBC have good marketing and availability, that's it.
There might be an application where anystuff are not terrible, but there will always be better options.

 

Yes. This.

Full weight MSM (well, more with the Blackbird GT3 roll bar)
190rwhp
11.75" front dyanapro with PFC 01s and 2.5" ducting
Stock sport brakes, rear, with XP8s, SS lines.
Motul 660 fluid
Stock MC
NT-01 (205s) on 6UL

The pedal feel change was amazing even daily driving. I could brake super late which for me, not "racing" for time, adds mad fun and overall I have amazing confidence in the system (I was told this could get even better with more aggressive pads). I almost replaced my MC thinking this was the issue until I made the change.

 

Do you have ABS? Do you run a Prop valve

 

MSM with full ABS. This weekend on a dynamic track (aka one with actual elevation changes) I did not notice any interference from the ABS with this set-up. If the ABS 'pulsed'/engaged I never felt it (which does not mean much coming from the blunt instrument that i am).

 

I almost did the same thing.

 

You would've felt it, ABS engaging is not subtle.

--Ian

 

Is there a big performance difference between the dynalites and the dynapros

 

Not sure, have not driven them back to back.

I'm running Dynalites, SS lines, 11" rotors, ATE 200 and XP8s. The 11" is not that much terribly larger than stock, but I felt like ditching the stock caliper was key.

I quoted the above for truth. I would go as far as to say that my brakes are now so good that its almost frustrating to drive on track with people who have STOCK brakes. Not that I am that omgamazballs a driver, but in an intermediate group full of Miatas (such as at MRLS this last weekend) traffic can be annoying as I end up paying more attention to the brake lights of the people in front of me (to avoid contact because they break so early) than I do to my own line and braking points. Once I get free of traffic and corner at my own pace things get much much faster.

Specific example: On turn 5 @ MRLS a lot of guys are braking all the way back at the bridge but when I'm out there by myself, I can brake between the #3 & #2 marker and carry MUCH more speed through the corner before heading up the hill.

The confidence boost is insane. Getting away from the stock caliper is key.

 

Brakes? Don't brake for 5

(depends on power/tires/aero)