Why does my subaru legacy have flat spots before the turbo's come in and is there a cure for this problem?
Answers:
part exchange??
It,s called turbo lag and all turbo vehicles have it. The turbo is a small fan that does not run all the time and when it does kick in it takes it a little bit to get up to speed and that is why there is a brief lag.
youve got a scooby and you dont know what turbo lag is .al visit you in intensive care daft ar,se
Have you had the car serviced lately, perhaps put on a rolling-road. Actuator weak.. clogged air filter, bad plugs. is it just turbo-lag? Get it examined by someone who knows about an engine in this state of tune.
a few things U can do, fit a smaller turbo with more blades, ie a dual, or quad turbo, if will give the same amount of boost if not more, but will decrease the lag.
the other think U can do which is more popular is to fit a dump value this will bypass the turbos waste gate, so that the turbo never loses speed, so the boost power is always there, so no lag
o yes it is called turbo lag by the way
try a remap that might help
all turbod engines have a flat spot which is known as turbo lag it is the time that the turbo needs to spool up as it is driven by exaust gas which is produced by the engine there is no cut and dry cure that is really realistic for a legacy but here are a few you can get a new engine management system that has anti lag programmed into it which injects raw fuel into the exhaust tract and ignites in the exhaust and turbo eliminating some spool up time (this is the flames and bangs that you see coming out of the back of turbod rally cars) next is fitting a small turbo alongside your existing turbo this will spool up your turbo faster but you still get lag
another cure is buy a car with a supercharger as these provide boost but with no lag as they are chain/belt driven
its called turbo lag, and the only way i know of getting past it is by fitting Nitrous oxide.
or bin the whole thing, and fit a supercharger.
Turbo lag
Typical turbo lag for the pressure to buildup. This is normal. Some cars has shorter lag. Go ask a local tuner for upgrades.
this could be fuel ?
do you use high octane as these were made for that kind of petrol .
try sticking a octane product in with your petrol about a tenner from halfords , get the one for road use and see if it makes any difference to the performance .
it could also be that your fuel pump isn't working that well as it must be fuel not going through straight away to get the turbo going .
what rev does the turbo cut in as perhaps this needs changing too .
good luck hope this helps you a little .
Turbo lag is all part of the adventure.Use a lower gear keep the revs up and you won't notice any lag.
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