Any progress on V8 engine swap options?

[strombomb]

Hey crew,

I’ve recently got my 2.7t swap car running and driving and I’m now in debug and cleanup mode.

Regarding instrumentation… using the Audi ecu connected directly to the Porsche powertrain CANbus, tachometer worked out of the box (Audi and Porsche use the same hex addresses and protocol for tacho). Also, I’ve been able to use an arduino to read ECT via CAN from the Audi ECU, translate, transmit, and successfully control the temp gage in the Porsche cluster.

For my 2003 Boxster… I believe CEL (solid lit and flashing status), the over temp warning light (next to the temp gage), and some others lamps/functions are controlled via CAN. Does anyone have any address data for late 986/996 that could be shared?

I searched the web and have found some limited info… but nothing that solves my problems.

[1thenaton1]

I achieved some of the maintenance items over the winter and kicked some down the road a bit. I did dyno the car this spring, 322 whp 311 torque.


I've had it out on track a few times this year, with no major issues. The way that I had coolant temp spliced from the Audi ECU into the boxster cluster worked, but was not optimal. Being resistance based, it read low on the cluster and the ECU. Not in a problematic way but I wanted to improve it. I added an aftermarket sensor in the coolant pipes from engine to radiators and a gauge for monitoring. It also blocks the Check Engine light!



Have a few more track days this summer/fall that I am looking forward to. Thinking I will add an aftermarket oil temp/pressure gauge in the next offseason.

[strombomb]

Wow those are great numbers - a really predictable power band… and congrats on the “reliability”. It’s pretty awesome you’ve gone without major issues.

I need to get my oil temperature hooked up too. I’ve got the Audi oil sump level/temperature sensor characterized using an Arduino… just need to hook up a display/readout at this point.

What tire setup are you running and how do you like it? I’m in the market for more traction and am interested in what you’re using?

I rewatched your track video and love the sound!!

[1thenaton1]

Thanks man. Love the flat torque curve.

Tires I have been running a square setup 255 40 17 Bridgestone RE71r. With those discontinued I have my eye on Falken 660s next, very similar. For a track setup I am glad to be able to rotate tires, although realistically as long as the tires are symmetrical (right to left) it would have the same benefit. Even with camber mods I end up wearing out the outer shoulders but can then switch them side to side.

I think with your setup and wanting to keep the car streetable, I'd look for a wider rear tire. I prefer 17s for the extra sidewall and lower replacement cost, but wheel options in 17x10 are limited. I think you could stuff a 10 wide and 275 or 285 back there and come close to handling 2.7t torque

Make me one of them Arduinos?!?!

[specboxCO]

For anyone looking for an Audi V8 powered Boxster, I'm selling mine as I am headed overseas.

2003 Boxster S Audi V8 Engine

Priced to sell, have at least $45k into this without my time being accounted for. Half what it would cost you to build yourself.

My loss is your gain - would love to see this car go somewhere it will be raced in anger.

[1thenaton1]

@specboxCO - I've never seen a picture of your car (though have appreciated your many contributions here over the years) and its funny that ours have several similarities (color, wheels, race number referencing engine, others im sure).

I'm curious how you mounted your rear wing and whether you felt that helped on track, and about the accusump setup if you care to share.

Consider sharing your for-sale ad in the "swapped porsche" facebook group, or I can for you if you don't participate over there.