300+ On Liquid Gas...

[JH07XR6T]

Anyone here running a modded BFII on Lgi??

ive picked up one,

it has a big cat and dual 2.5" exhaust, typhoon intake and k&n filter.

I understand the lgi system switches to petrol above 250ish kw

So if/ when I update the cooler, injectors and get a tune, I should be around the 300rwkw mark,

is it going to get really confused with the gas changeover?

or should I run it on straight fuel if I want to play?

[ratter]

My understanding of the orbital gas system is there is no adjustment possible, so basically changing the tune of your ecu may upset the gas and end up with a car not running correctly, the gas system would switch based on rpm not power output so even a mild tune may have the car running very lean etc before the switch over rpm.

You will need to drive the car with stock tune while on gas and then flash the ecu to run a power tune on petrol, but the car should trigger an engine light to come on while on the stock tune and having a cat fitted, so you will need a tune that has stock settings except for the cat adjustments for normal use for driving on lpg

[bionicxr6t05]

Also no lpg system switches cleanly from petrol to gas or vice versa if its switching while your on boost halfway through the rev range the timing will be all over the shop and it will ping for sure, only gas systems iv seen on turbos run at idle/cruise anything higher and it switches to petrol, just get rid of the gas

[ratter]

We have quite a few cars around the country running boost, tunes and JTG that stay on lpg unless the drivers switches them back to petrol

[bionicxr6t05]

Yeh stayin on either would be fine

[JH07XR6T]

yeah the main reason I want to tune is to get rid of the cats check engine light, and a few more kw's

the cooler, laugh at me all you want, is just because I like the look.

I am definately keeping gas because it still hammers on gas, and is cheap as chips to run.

so your saying a basic tune ie bit more boost, cat delete etc, should do the trick. ( that stays on gas ?)

does that mean I could get capa or similar to write me a cat, boost, cooler, exhaust tune, and flash it myself buying the flasher from them? they have them for 595 with 1 tune at the moment.

and then have a 2nd petrol tune, which is a bit mroe aggresive?

or can I only choose one. I dont want to have to flash it stock to performance etc.

sorry if I sound like a dumbass, but my last car was a golf gt diesel.

this is all new to me.

[ratter]

Your gas system is not adjustable so any performance mods to the car is going to throw the gas system out of wack.

You could do a tune for petrol only operation but would not correctly on gas, do not get a generic tune! if yours is an auto, do not buy any flash box except for a X3 otherwise no other tuner will be able to write a tune for your car

[JH07XR6T]

ok so should I not bother with a front mount etc? would it throw the system too?

to get rid of the check engine light, on gas, would I need to have a cat reinstalled? is there a way the exhaust can be done to trick the ecu into thinking the 2nd cat is there? I really don't mind getting it put back in.

its not worth me paying 800 for an x3 just to run the cat and otherwise stock, id rather lose some noise and some kws and save my pennies, I don't want dramas, in and out of shops etc..

I'm pretty happy with the power the car has as is anyway, I came from a gt diesel golf, so 220ish rwkw puts a smile on my dial.

not really keen on having the car tuned, injectors etc for fuel only, as I doubt ill ever race, might go to the drags once for some laughs but that's about it.

its a good cruiser on gas, I do about 500kms a week, mainly freeway.

verdict? fix the cat check engine. and drive the bloody thing?

[Paulie2256]

verdict = get someone with VCM to turn the engine light off and leave the car alone.

[ratter]

if using vcm it will be more than just the cast light to be addressed, boost will have to be addressed to bring it back to stock levels to stop any boost errors and to have the gas system running correctly