
Engine Tuning xu10j4r
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Engine Tuning xu10j4r
How can i increase the power rating of my xu10j4r engine? I have heard that the xu10j4r engine is easy to tune, but i don't know, there are people in her that know alot more than i do about that, but what is the easiest way to boost the peformance of that engine, and where can i find tuning parts for the 406 1998? 

XU10J4R
- Welly
- The moderator formally known as Welton
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- Joined: Tue Jan 10, 2006 12:52 pm
- Location: East Midlandfordshire
Re: Engine Tuning xu10j4r
We're not really in to tuning here I'm afraid. You'd be better looking on a 306 forum I think.
A normally aspirated 4-pot petrol are never 'easy' to tune up; you'd need cams, gas flowed heads/manifolds, cam timing gear, a new fuel map and even individual inlets for each cylinder with separate fuel injection etc. all very costly and loads of setting up time.
The 306Gti had a factory tuned version of this engine (XU10J4RS) which was gas-flowed, had high lift cams, new inlet and exhaust manifolds etc.
A normally aspirated 4-pot petrol are never 'easy' to tune up; you'd need cams, gas flowed heads/manifolds, cam timing gear, a new fuel map and even individual inlets for each cylinder with separate fuel injection etc. all very costly and loads of setting up time.
The 306Gti had a factory tuned version of this engine (XU10J4RS) which was gas-flowed, had high lift cams, new inlet and exhaust manifolds etc.
Cars in my care:
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2021 Kia Spottage 1.6 Pez Turbo Dual Clutch Gearbox Trickery
2013 Renner Twingo - donkey work
Re: Engine Tuning xu10j4r
should imagine it would be the usual things like air filter exhaust bigger injectors forced induction etc lol