upgrade injectors with stock ecu

[matt31]

ive got a 32 gtr and a few of the injectors are leaking, i plan on modifying the car in the near future so is it possible to upgrade injectors to to support a pair of hks 2530's before getting an aftermarket ecu. if so can someone recommend what size. any help very much appreciated.

[Lepperfish]

I think there was a thread on this a while ago, do a search and you should find the info.

But inshort, from memory you cannot run bigger injectors on the standard ecu..

[55Nat]

Yes you can, but its not good for the enigne as you need to change the injector correction times for cold start and idle, it will run like a bucket of sh!t. You'l need an aftermarket ecu - PFC.

You might get away with a SAFC but im not sure if it will help much.

If you run the stock ecu with say 700cc Sard it will be dumping shit loads of fuel in as the stock ecu thinks its still got stock injectors, you will need to make correction 440cc / 740cc = 0.59 % so the sard injectors are almost double the size of standard.

If you get too much fuel going into you'r cylinders the oil will be washed off the cylinders resulting in scoring and fuel running past you'r pistion/rings and into you'r sump. Fuel & oil in the sump will result in explosion when under heat & pressure.

For 2530's these turbo's are capably of producing around 300kw's their for 700cc Sard injectors will be ample. Incase of further development later on, bigger turbos etc....

Hope that helps,