Fuel Pump/injector/ECU

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07-25-2006, 09:46 AM

#11

j9fd3s

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Join Date: May 2002

Location: California

Posts: 22,465

Quote:

Originally Posted by FC RotorHead' post='829693' date='Jul 22 2006, 06:24 PM

Thanks again for the help.

So even with the stock S5 ECU it wont be a problem using 720cc's and a FD/Walbro fuel pump? Nothing serious is gonna screw up?

what would be the drawback of not using a standalone EMS.

Thanks!

i ran 550/680 on the stock s4 ecu and it drove just fine, occasionally at part throttle you can feel the secondaries come on, but at full throttle it was seamless.

i also knoe someone who's running 680/720 on the stock ecu, with a full t4 turbo, not the smartest combo, but it does work

07-25-2006, 11:33 PM

#12

Tomoya

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Join Date: May 2006

Location: Canada, Alberta

Posts: 76

Quote:

Originally Posted by j9fd3s' post='829991' date='Jul 25 2006, 08:46 AM

Good to have an idea of whats waiting for me if I didnt get a standalone ECU. Thanks for the info.

You said it was an s4. So any differences with an s5 with same senario?

07-26-2006, 12:19 AM

#13

j9fd3s

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Join Date: May 2002

Location: California

Posts: 22,465

Quote:

Originally Posted by FC RotorHead' post='830096' date='Jul 25 2006, 09:33 PM

Good to have an idea of whats waiting for me if I didnt get a standalone ECU. Thanks for the info.

You said it was an s4. So any differences with an s5 with same senario?

i wanna say it might run a little worse, cause the s5 ecu is a little better, but seths car ran fine with 550/1600's on the stock ecu. i wouldn't try to run larger primaries on the s5 ecu's though, or even the s4's, it should throw the drivability/starting right out the windah