(03-17-2011, 05:48 PM)ForcedInduction No. The elements are different sizes which will set a check engine light.

(03-18-2011, 05:14 PM)mantahead

(03-17-2011, 05:48 PM)ForcedInduction No. The elements are different sizes which will set a check engine light.

hi,
how will the ecm "see" bigger elements to show a fault?

(03-18-2011, 05:14 PM)mantahead how will the ecm "see" bigger elements to show a fault?

(03-19-2011, 01:48 AM)pp d I`ve done "electric pump" with 7 mm elements. It works.
Of course, the programming has to renew to get more power.

(03-19-2011, 05:57 AM)ForcedInduction

(03-18-2011, 05:14 PM)mantahead how will the ecm "see" bigger elements to show a fault?

The fuel rack position will be outside the range expected by the ECM for a given RPM and throttle input, especially idle.

(03-19-2011, 01:48 AM)pp d I`ve done "electric pump" with 7 mm elements. It works.
Of course, the programming has to renew to get more power.

Sorry, those two statements are contradictory. If the ECM uses the same rack travel map to control the engine and it doesn't "see" the difference in output, then it would automatically result in a large power increase with the stock map.
Based on your statement the ECM is "smart" enough to see the change and it reduces rack travel to limit power. By American OBD-II standards that should set a CEL for emissions controls.

(04-08-2011, 05:30 PM)mantahead I run my car today on rolling road with 7.5mm elements in electronic pump and holset hx35 with standard ecu, no resistors and no tricks.
So far i have 266hp with 1.77 bar of boost. So after everything i have read about boost cut and limp modes i can't believe that standard ecu let me go this far. I need more rpm to make more power. I need to sort out chips for remap as i,m having problems with them at the minute. Got chips and flashed them but they won't even start car. They cross referenced as the right ones but won't work.

(04-09-2011, 02:08 PM)tomnik

(04-08-2011, 05:30 PM)mantahead I run my car today on rolling road with 7.5mm elements in electronic pump and holset hx35 with standard ecu, no resistors and no tricks.
So far i have 266hp with 1.77 bar of boost. So after everything i have read about boost cut and limp modes i can't believe that standard ecu let me go this far. I need more rpm to make more power. I need to sort out chips for remap as i,m having problems with them at the minute. Got chips and flashed them but they won't even start car. They cross referenced as the right ones but won't work.

PP D made the pump?
Good to hear about 266 hp.
How does the engine idle/behave?
Are you happy with the elements and set up?

Tom

(04-09-2011, 05:20 PM)mantahead hi Tom,
fitted your elements myself. I fitted pump to car without touching element adjustment and run it. I had a lumpy idle (NOT BECAUSE OF ELEMENTS) but because of elements not being adjusted and pump timing was retarded far too much. Next step, i have worked out a way to set up individual quanity with the pump on the engine. I worked out cyclinders 4 and 2 were supplying nearly twice as much fuel as the others. So when i got this adjusted the idle was sweet. I am very happy with the elements.
I know some of these pump guys are going to tell me i am wrong doing it this way but quanity is quanity and my results aren't telling me any lies as i can watch them with my own eyes. Although if i was trying to set up a governor it would be a different story as it would need to be done on a bench.
hopefully very soon when i get the ecu sorted out i will have a good bit more power and i will post up my dyno graphs. If i wasn't confident about my pump set up i wouldn't be pushing this engine.

wayne