after ThrottleBody cleaning and retune ...top speed decreased ...help .

[darrengoh89]

That day i send my car for TB cleaning and retune back ...changed spark plug and cable ....pick up much more smoother ...good iddling ...but dont know why ...my top speed from 140kmh ...now decreased to 120kmh ..even worse ....can someone explain to me whats happening ? will it be the tuning problem ?

 

[damone]

I wonder what is your obsession with top speed. By the way, are you using open pod filter?

 

[DarkAccoon]

top speed 140......
what are you driving?

what kinda of re-tuning was done?

 

[93na]

wat 140 wat car are u driving!!!! fren 1.3 satria efi!!!! easliy 180km/h... stock standard!!!! only has the cai thing at the bumper!!!!...try going back do some tuning la!!!! manual or auto???? man only 140!!???? highway gone la!!!!!

 

[darrengoh89]

err ya ...thats why need some opinion what to do from you guys here

 

[DarkAccoon]

Darrengoh89,

we need more information in order to help you.

information like:
- what car are you driving?
- what kind of modifications have been done?
- what transmission are you using? Manual or Auto?
- how far down did u press the accelerator?
- the top speed you are saying is like my friend's old kancil 660 1st generation... actually that only hit max out 110 before we started screaming "WE'RE GONNA DIEEEEE"

 

[darrengoh89]

lol ..k ..here's the information : -

-satria 1.3 fuel injection (manual)
-everything in stock ..standard ..no mod has maded
-pressed down till max already ...
-before send for TB cleaning and tuning ....can achieve to 140kmh and further more to 160kmh is hard abit ..unless got downhill
-after sending for TB cleaning and tuning ...can only achieve till 120kmh ...and further more to 140kmh ...muz have abit downhill road ...

 

[SkYwAlKeR]

how did ur mech clean ur throttle body??.. remove the whole unit or jz spray TB cleaner at the mouth of the TB??...
engine mmc or svdo??...
if mmc, check ur TPS position... mayb wrongly fitted back in...
else, check if there is any leakage if air in between throttle body and intake manifold... torn paper gasket can cause leak...

 

[darrengoh89]

its running svdo ...got remove the whole TB out and clean up ...then fix back ...then tune back ..thats it ...so whats the possibilities that making my top speed drop ?120kmh only ..thats really gila lol

 

[ftzone]

is your air filter replaced? exhaust system clogged?

 

[darrengoh89]

air filter using stock extractor using 4-1...you suggest me to change it to knn drop in and go for 4-2-1 extractor? but the problem now is before i did this TB cleaning ...with stock air filter and stock extractor also can reach 140kmh but hard for 160kmh wor..but now is 120kmh hard to go to 140kmh....i juz wanna make sure whether is something wrong with the tuning or not ....this problem really quite frustrating me xD

 

[SkYwAlKeR]

before this with 4-1 extractor u can reach 140kmh??...
btw, 4-1 extractor not really recommended for high speed run... get 4-2-1 extractor instead...

 

[darrengoh89]

before this using 4-1 extactor also can go 140 ma ...

 

[E-Tech]

Before this behind got wind.....that is why 140km/h
After clean, wind from front... that is why 120km/h

Away... your car is below average for 1.3 but just correct top speed for our highways...LOL!!!

 

[LuKa]

when was the last time u tried top speed at 140?? maybe the tb n retune is the problems.. maybe it other stuff that causing it.. is you clutch still alright??