beaterX project thread

[Murlo26]

Correct, the pump is an inductive electrical load and will have a high inrush current. If that inrush is high enough the fuse will do its job and blow.

This is part of the same fuse curve I was talking about. Say a 20 amp fuse hits 30amps it will blow instantly, but at 21 amps it will probably take 5-10 seconds depending on the fuse.

You can blow 20a or 30a fuses very easily with a lot less running amps. Meaning your actually running amps could be 12-13 amps only.

Inrush is typically 10-12 times the amount of your actually running amps.

[Murlo26]

Also remember current equals heat and heats up the wires and then resistance goes up and creates more heat. So sustained use makes it easier for fuses to blow as everything is up to temperature.

[scheides]

All good points, thx guys :)

[Murlo26]

Updates! :)

[scheides]

Update with dyno numbers!

First off, BAP is working like a champ. To clarify, it shipped with a properly-sized 30A fuse for the stock fuel wiring.

Next up, the Cobb BOV. This thing is smoother than a crushed stock BOV but is it really holding boost? I had been suspicious so I swapped my stocker back on just before I hit the dyno. AFR dropped nearly a full point on the street--this tells me the stocker is leaking. So I just left it on and after shane did a few warm-up baseline pulls I swapped the Cobb BOV back in with ZERO other changes:

http://www.scheides.com/albums/evoX/evox_e85_dbperformance_bov_stock_cobb.sized.jpg

So basically as it had been on the street (self-tune with some GREAT guidance from shane@DB) on the cobb valve it rolled in on ~460whp. Holy crap! I was so excited I couldn't believe it!

Shane made some changes to fueling to help address a part-throttle issue I had been having around 2500-3000 and tweaked timing slightly and that was about it.

http://www.scheides.com/albums/evoX/evox_e85_dbperformance.sized.jpg

http://www.scheides.com/albums/evoX/evox_e85_dbperformance_boost.sized.jpg

http://www.scheides.com/albums/evoX/evox_e85_dbperformance_afr.sized.jpg

Boost is about where I had it on the street with my hybrid MBC/BCS setup, the turbo is about at its limit from 6500+ as WGDC is pegged at 100%. I'm not trying to get a ton more out of it for now, this will be my every day tune as well as my drag/autoX tune. The car responds very linearly and the powerband is just wiiiiide and strong.

I'm very happy and I have some video that I'll post later.

[goodhart]

Graphs look funky with the sharp edges, must be that Evo X vtak! haha

Great numbers though man! Makes me wish I would have done a before/after with my stock vs. synapse.

[Tachyon]

Nice numbers! 4k of powerband makes for a very fun all around machine :)

[simulatedwood]

Scheides,

Awesome numbers, wide powerband, and yes please at MAP proving grounds..can I please have another ride?

What has it taken to get here? and what you goal for the BIR 1/4 mile?

[scheides]

Nice numbers! 4k of powerband makes for a very fun all around machine :)

Truf! I will be raising the rev limiter at the track as needed. The head has Supertech duals in it so it could easily turn into 5k of powerband :) This graph doesn't show it very well, but the car is *very* driveable and has plenty of power under 3500rpm and it idles like a dream.

I am constantly looking forward so I can't help but think about what's next but I'm honestly not sure....ported IM/TB would help all over and bigger cams would probably help a little up top but...that's all way down the road :P

[Murlo26]

Wow, 480whp, awesome numbers!

That looks like an awesome setup you have there I must say. I love the boost creep in the middle, prolly makes the car feel likes its pulling like crazy.

Do want a ride.