[jpc]

have a f8 with slp twins that have a inch cut out of the belly.want to spin it about 8600rpm.but on the dyno it hits a wall at 8300.is there a rev limiter on the ecu or some thing else?

 

[PLUMMER]

yes but not there and 'WALL" like what ??????? power loss or ignition failure,,sputter???? pipes stacking up ?????? what kind of dyno ?? was it grounded properly...........

 

[ods dan]

won't the inch cut out rev lower?? not a pipe expert.. but less volume..

anyway f8's with the slp's seem to like 8200.. unless your running a "race" setup?

 

[jpc]

carl gallways dyno.just wont rev any higher.8200 with stock slps and 8200 or cut slps.can hold it open for a lone time on the dyno and will never get it to spin over 8300.had dyno to stop at 8600 and would not do it.does the ecu have a rpm range that starts to retard timming and if so what is it?

 

[G5301]

efi or carb?

 

[jpc]

efi

 

[godzilla72]

Originally posted by The Outdoor Shop@Oct 3 2005, 05:44 PM
won't the inch cut out rev lower?? not a pipe expert.. but less volume..

<div align="right">index.php?act=findpost&pid=906070

[/quote]

No, taking a inch out of the belly will move the power up......

 

[bikeman]

Put the center section back in the belly and shorten up the head pipe instead. Probably won't even take and inch

 

[ZRJoe]

I thought that I read on here once that the ECU's take away fuel above 8500.

Just a thought. Perhaps Dan or someone else can confirm

 

[bikeman]

They do get alot leaner once you hit 8500 rpm.

 

[ods dan]

Originally posted by godzilla72@Oct 3 2005, 08:40 PM
No,  taking a inch out of the belly will move the power up......
<div align="right">index.php?act=findpost&pid=906378

[/quote]

I am def. not a pipe designer.. LOL.. some day.. I will f with some..

 

[chubby5258]

The slp pipes will not rev up that far fall off too fast, the D&D pipes have alot of over rev.