Boost Higer When Going Faster?

[nismo_lp]

... does that happen? reason being that at speeds below say 90ish i can take it to the limiter and dont hit fuel cut.... but at higher speeds i hit what i think is fuel cut way before i get to the red line!?

[Doughie]

it happens because at higher speeds there's more aerodynamic drag (vs. very little at low speed) and therefore more load on the engine and more boost. That and/or cos you're in a higher gear too.

 

Someone will be along soon to explain properly..

[nismo_lp]

time for a fuel cut defender then huh? what bar will i be boosting at with a rear decat once its fitted and at what pressure does the fuel cut kick in with out the defender?... 0.8 bar???(jspec).

[Jake]

At what boost level does this happen?

[nismo_lp]

if i had a boost gauge id tell u! lol what should i be hitting with just a rear decat?

[Jake]

It's irrelevant if you don't have a boost gauge

FFS

Post again when you have a boost gauge. One that has Peak Hold

[Clarkey]

if i had a boost gauge id tell u! lol what should i be hitting with just a rear decat?

I'd consider buying a boost gauge before an FCD. Or get both. With cat #2 gone & a aftermarket exhaust .. maybe 0.9 - 1bar (1bar if you're lucky)

 

Cat #1 is the one to get rid of .. ideally both of them.

[nismo_lp]

so the fuel cut is currently kicking in at 1 bar???? Im not sure i want to tho too much money on getting performance out of it as i know il end up doing more and more and spend £1000's on a single etc... now ive got a taste for speed i might take the easy option... sell it and find 1 supe thats already had the single fitted!

[carl0s]

I thought this was normal. I only hit 15psi above 90mph, fuel cut comes shortly after.

[nismo_lp]

I thought this was normal. I only hit 15psi above 90mph, fuel cut comes shortly after.

 

its a right bitch huh!