Intake plenum and 911 throttle body

[Danimal]

Follow up question. I’m stuck with 91 octane out here. Will my engine be able to utilize the increased air flow? My understanding is that engine has to pull timing slight to compensate for the lower octane.

[redpepperracing]

Originally Posted by Ben006

For the throttle pedal, as much as I would love to bring it to the market quickly… the last prototype I test myself wasn’t up to my liking (even though my guinea-pig loves it), and I made several changes to improve the movement of the pedal.
Rennline product is available and tested. I can’t compete for now :/ hopefully mid 2027

https://imgur.com/gallery/FVnLhJY#K3VckPV
https://imgur.com/gallery/FVnLhJY#qsWt8UB

Those imgur links don't work. I'll have to decide how badly I want to replace my pedal! I took it apart and added a couple of screws to hold the clips in place, it feels way more solid now, but I haven't actually driven it yet. It can probably wait for now.

Thanks!
Tom

[Ben006]

Originally Posted by Danimal

Follow up question. I’m stuck with 91 octane out here. Will my engine be able to utilize the increased air flow? My understanding is that engine has to pull timing slight to compensate for the lower octane.

Yep, the DME does protect the engine that way through knock detection.
Though, improved airflow always mean more power potential.
So you start with less power, and end up with less than if you were using high octane fuel, but there should still be a gain !

Are you in California ? The part is not CARB legal, I don't know how badly that can affect you ?

Your order is received though and I'll pack it tonight after work

[Ben006]

Originally Posted by redpepperracing

Those imgur links don't work. I'll have to decide how badly I want to replace my pedal! I took it apart and added a couple of screws to hold the clips in place, it feels way more solid now, but I haven't actually driven it yet. It can probably wait for now.

Thanks!
Tom

Arh, was on my phone so I couldn't get the proper links...

[redpepperracing]

Very nice! I wish it was available, I'd buy it right now!

[redpepperracing]

Just a thought, I have an OMP pedal cover, so it seems like a combination of your lower pivot hinge and the carbon plate plus the OMP cover would be most of the way to a set. Can you sell just those pieces?

[Ben006]

Can you show me ?

The part that block right now is the extended link in the back.
I'll work on it and get a proto soon as I have already plenty of stuff to have made !

[redpepperracing]

This is what I have now. Adding just your lower block, and some kind of attachment to the cable mechanism should be all I need.

[redpepperracing]

Getting back to the original thread topic, I dyno tested my car yesterday. To recap my setup I have the following:

Intake side:
- 987 airbox
- 987 BMC filter
- 987 intake tube and MAF
- 45 degree elbow
- 997 throttle body (74mm I think?)
- 987 modified distribution tube
- 996 plenum and runners

Exhaust side:
- 996 equal length headers
- 2 inch stainless tubes
- 2 inch high flow cats
- 2 inch valved mufflers

Other mods:
- AC delete
- Electric PS conversion
- Underdrive pulley

For tuning I am using an ApexI SAFC. AT WOT, my AFR is around 11:1 (logged with an AEM wideband), so I need to adjust that, but it's better to be rich than lean.

Here is the chart, blue is mufflers fully open, red is mufflers fully closed. I should have done a 'partial open run', but I didn't.



I'm pretty happy with the results, I'm basically at crank power, to the wheels. Without doing a lot more very invasive mods, aside from tuning the AFR, I don't think there is much more I can get out of this thing.

[Starter986]

How do you upload pictures?

[redpepperracing]

Originally Posted by Starter986

How do you upload pictures?

Not sure who you are angry with. I added the image link to my post originally, I just edited it and re-added it and I can see it. It's possibly related to the SSL certificate expiry.