Hmm... Why is that? (Sorry to derail the thread, I'm honestly curious).

Pressure in the manifold will be a cumulative of manifold and tail pipe pressure. It will always be higher than tailpipe pressure. If you're mapping your fuel map as a MAP v. EMAP, you'll need to know manifold pressure. Tail pipe pressure is useless for this calculation because it disregards manifold pressure. Monitoring tail pipe pressure is only useful in a sense that you want it to be as low as possible and therefore would want to know if it's relatively high.

Interesting... Wish I didn't know that now! :rofl: I def intended to have EMAP as an input for my F88, but I don't know if I'll have space for both EGT AND EMAP bungs on both runners. :willy_nilly:

I feel like there would need to be a LOT of heat dissipation to keep from blowing out sensors if you took readings in the manifold as opposed to the DP..

Sometimes I think life would be more simple without knowledge :lol: (Ignorance is bliss and all that... lol)

For EMAP you need a long run of tubing to dissipate the heat before the sensor. Think Pete had some good pics of his own arrangement. AEM sells a kit with a sensor, bung, and SS tubing.

Yeah, in my minds eye I'm seeing like 10' of copper or aluminum tube that runs away from the heat source, then just coils along the firewall for like 2' until reaching sensors mounted near the wiper blade motor.

My concern with that would be the potential for a pressure drop due to the turns and distance required to cool the air enough for sensors to last a reasonable amount of time.

More like 24" total. You're overthinking it.

:smilielol5::smilielol5::smilielol5:

Fair enough. :patriot:


I've had "accidents" as a result of NOT overthinking it in the past, so I figure it might be better to go with the "moar is bettar, because MOAR!" approach :suspect:


(But yeah, the 10' figure was intentionally overzealous, I wouldn't ACTUALLY try to stuff 20' of metal line in there for a pair of EMAP sensors :lol:)

You only really need one EMAP sensor.

Well done.
 

Nice work Elliot, cast is the way to go. I have always used cast manifolds to handle heat. your design is great.

One day, some day, I'll test this set up, hopefully sooner than later.............. 6 mother fucking months!

We have 9 Turblown BorgWarner EFR IWG Cast Manifold Turbo kits Available for sale for the FD & FC Chassis.

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* 304SS TIG welded & back purged Mandrel Bent 3" V-Band downpipe with single o2 sensor bung, vband clamp and 2 bolt gasket/hardware
* 347SS Investment Cast Tapered IWG turbo manifold
* Replacement WG actuator bracket Adapter for necessary placement
* Inconel T4 Turbo Gasket, and Inconel turbo manifold studs & nuts
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* 2 feet of fire wrap heat sleeve
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Just so everyone is aware, I plan on cleaning this thread tonight over cocktails.
Posts will be deleted
Threads will be created
Links will be added
Any issues should be directed to me via PM. But don't expect a response until Monday

And for anyone wishing to continue....
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We are now onto our 2nd group buy. We have 80 cast manifolds almost finished, and have tweaked the kit a little bit more to improve everything.

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We are at 13 deposits.

Also we managed some good numbers yesterday on one of our shop cars with the cast 8374 IWG kit