myvi 1.3 first gen cant accelerate above 120 km/h

[vr2turbo]

what i found out so far is that my myvi will delay the shifting when at full throttle... i need to release the pedal for it to shift

On Full throttle the gear will delay shifting until attain higher speed....

 

[Izso]

what i found out so far is that my myvi will delay the shifting when at full throttle... i need to release the pedal for it to shift

it seriously sounds like you have an OD issue

 

[sweelt]

with od light off i still cant reach 120km/h easy. will record it once i got time.

get your friend to help, or use gopro or use hp holder.

 

[alcyon]

My old 91 saga overhauled in 2004 still can do 150 kmh at 5000rpm in 5th gear. Bog standard, just been using syntethic oil since overhaul. the PCV valve hasnt clogged yet.

 

[Triple Y]

OD issue or gearbox issue? because when at full throttle n wont auto shift is without od light on....

 

[ixeo]

Top of my head, assumption... both your brake calipers jammed?

 

[Triple Y]

Don think caliper and brake jammed since functioning normally...

 

[vr2turbo]

OD issue or gearbox issue? because when at full throttle n wont auto shift is without od light on....

Send to mechanic to check up......

 

[ixeo]

Don think caliper and brake jammed since functioning normally...

Jammed caliper the brake still functions...

 

[Triple Y]

I think i found out the problem already. problem cause by too much back pressure in exhaust system nothing to do with my gearbox after changing to straight flow can reach 140 easily.

thank you for all ur help

 

[vr2turbo]

Muffler clogged up dy......lol

 

[parakey]

problem cause by too much back pressure in exhaust system nothing to do with my gearbox after changing to straight flow can reach 140 easily.

You mean your Jian Hang S-Flow did worse than the stock muffler?

 

[Triple Y]

No i think the problem was caused because my s flow (jian hang) and mid swirl bullet (kent wong exhaust) both have the function of storing backpressure in the exhaust system n cause too many pressure in the exhaust system not allowing the pressure to exit smoothly n my rpm cant rise smoothly.... if im correct la

 

[sweelt]

So dun need 6mt gearbox as mention before in another thread ...lol

 

[ixeo]

No i think the problem was caused because my s flow (jian hang) and mid swirl bullet (kent wong exhaust) both have the function of storing backpressure in the exhaust system n cause too many pressure in the exhaust system not allowing the pressure to exit smoothly n my rpm cant rise smoothly.... if im correct la

Got picture of your s flow? Curious how it looks in a myvi.