Will larger secondaries cause fuel cut? S5 TII

Reply Subscribe

Thread Tools

Search this Thread

Jan 30, 2010 | 02:20 PM

hosmer

Thread Starter

Full Member

iTrader: (1)

Joined: Jan 2010

Posts: 92

Likes: 0

From: taunton ma

Will larger secondaries cause fuel cut? S5 TII

Will having larger (880's) secondaries cause fuel cut with an OEM ECU?

Setup is:

91 TII
88 block
streetport
S5 sensors/electronics/ECU (N370)
FCD
Precision SC61/racing beat manifold
550/880 injectors

Has a wideband and SAFC II...running 8.5-9psi

Jan 31, 2010 | 09:43 AM

Aaron Cake

Engine, Not Motor

iTrader: (1)

Joined: Feb 2001

Posts: 29,798

Likes: 128

From: London, Ontario, Canada

Fuel cut will occur regardless on a stock ECU without an FCD at 8.6 PSI.

If you have an FCD, fuel cut will not occur regardless of injector size.

The ECU has no way of knowing what sized injectors you have installed, thus changing injector size will have no effect on ECU operation.