Revs

[nimhbk]

Is it normal for the engine to go flat around 5500 to 7500 or is that a flat spot which can be sorted by getting the ecu mapped

 

[campbellju]

Its not normal and mapping won't help. Think fueling/ignition/air leaks and you'll be closer to the mark.

Genral maintenace - fuel filter, plugs, leads, dizzy cap and rotor
Boost leaks - look around the engine bay and see what you can hear/feel at joints after the turbo

 

[stumo]

It could be a knackered foofoo valve.

 

[Rishi]

Is it normal for the engine to go flat around 5500 to 7500 or is that a flat spot which can be sorted by getting the ecu mapped

Are you running more boost and are you still on the std fuel pump?

 

[nimhbk]

no have a fmic/with a high flow rate pump/ hks mushroom filter/ running at 0.9/1.00.

just had new leeds, rotor head, +cap, put denso sparks in two years ago, only covered 2000 miles thou and have been told they are good for 30 000 milles.

have a new standard ecu to put in as the one in there is a tomei chipped one i have been told before to take this out as it will not be set up for over here in the uk (could be this).

thanks for replys so far

 

[Fusion Ed]

Pretty much every pulsar tends to run a bit flat top end wise especially on stock turbo (and again once your pushing 400 from restricted breathing on head/cams etc)

 

[antgtir]

Mine is standard, the power profile is nice and steep up to 6500rpm.

Do you get any hesitation / holding back?

Ant.

 

[youngsyp]

Mine continues to accelerate at an ever increasing speed, as the revs climb. It's only the rev limiter that puts a halt on the action.

As ever, check all the consumable ignition and fuelling parts. Check the wiring on the fuel pump too and your fuel pressure.

PAul