Honda Civic Rebirth goes very slow after 170 km h

[pwuser152485307098]

Hello guys,
I have honda civic VTI Oriel Prosmatic 2014 model. The car is perfect. In uphill driving I go to Peer suhawa at 1.8K rpm only i.e. very smoothly. However there are two issues in car.
-1 On Motorway After the speed of 170 km/h, the speed is going up very slow i.e. after 4 to 5 seconds it increase one digit.
-2 It zero to 100 time is more, it takes 13 seconds i.e. 2 seconds extra while reaching to 100.

Everything is in perfect condition
- I have changed fuel pump.
- I have clean the injectors.
- Transmission oil is changes on 88k, currently the car is 96k driver.
- I have changed the plugs and have 3 tips instead of single (i.e. more powerful plugs).
- while testing it on Motorway the AirFilter was brand new.
- I am using fully synthetic 05w30 honda genuine oil.
Engine is in perfect condition.
I check the coils and its resistance is few points more then the genuine new coil. New coil values was 0.48 ohm and my coils values were, two 0.53 and two 0.56. So I buy the new Chinese coils, the car pick was much better but the issues after 170 km/h is still there. don't know is it due to coils or it can be some other reasons. Price of genuine brand new coils is 48k (4 coils). so before going to genuine coils, I want to confirm if genuine coils will solve that issue. Need expert opinion.

[jklodhi]

Catalytic converter needs to be cleaned .

[waleed80]

Why you need to drive it at 170 in the first place?

[munirhusain]

Choked catcon. 0- 100 on my 8th gen decreased from 13.5 seconds to 11 seconds after catcon cleaning. Go for it.

[anon35615524]

I go to Peer suhawa at 1.8 rpm only i.e. very smoothly

How can you go there by 1.8 rpm only?

In fact, how can you even drive the car and its engine at 1.8 rpm?

Is it 1.8K, 1800 rpms? Please check and confirm.

To me, 1.8 rpms seem impossible, even rpms at idle are generally more than 750~800 rpms.

[xenerking]

sir samjha karen aur shama karen

[xenerking]

for OP, bro i guess 8th cylinder is misfiring!! get it checked and then try shifting to 4th from 3rd @ 170kph

[anon35615524]

On Motorway After the speed of 170 km/h, the speed is going up very slow i.e. after 4 to 5 seconds it increase one digit.

Please avoid driving your vehicle above the legal speed limit, i.e. 120 kmph at max.

2ndly, Civic is not some sports car / performance car. No doubt, its road grip and handling is good (may be better than 1.8L Corolla), but still, its risky driving it at such high speeds.

[anon35615524]

I have changed the plugs and have 3 tips instead of single (i.e. more powerful plugs).

Dear I am not an expert in spark plugs, but I would tend to disagree with it.

03 tips / 04 tips instead of single one, may not mean more power. 1.8L engine in Civic will remain 1.8L, with defined hp and torque.

The best spark plug for your ride would be the one mentioned in your car's owners / users manual.

Different types of plugs have different heat ranges. When we mess around with spark plugs, then instead of betterment, things can go worse too, and engine can be seriously affected, i.e. badly affected.

I did not intend to make fun of anything, or being sarcastic, but some things seem wrong, which need to be taken care of.

[anon35615524]

I check the coils and its resistance is few points more then the genuine new coil. New coil values was 0.48 ohm and my coils values were, two 0.53 and two 0.56. So I buy the new Chinese coils, the car pick was much better

I sense things to be wrong here (may be in long run, if not immediate).

@Naweed Bhai, please guide.

Is the decision by fellow member to use 03 tips spark plug, instead of single tip, seems right? (I think single tip spark plugs come stock).

And is it due to 03 tips spark plugs, the resistance of coils have changed?

What could be the harms of using 03 tips spark plugs in engine? and how would it affect coils?

[Naweed]

i dont want a debate here but just a few things
- will a multi-tip plug produce more heat or a single tip
- this heat will be concentrated to one area .. the burning of mixture will not follow the designer curve .. it will have adverse effects in long term .. i leave the rest to reader to find out
- a performance car uses multi-tip plugs and higher group oils if these things were better for a honda civic, oem must have mentioned or adopted

[anon35615524]

• will a multi-tip plug produce more heat or a single tip

For sure A multi tip.

• this heat will be concentrated to one area .. the burning of mixture will not follow the designer curve ..

• a performance car uses multi-tip plugs and higher group oils if these things were better for a honda civic, oem must have mentioned or adopted

[silentassassin1]

I think normally civiv is slow after 185kmh. New civic is also slow

[xenerking]

may be better than 1.8L Corolla

kya keh dia apne

[anon35615524]

Ha'an Na!

[xenerking]

grande k pedal shifter par 100 100 reborn qurban,

kaisa dia apko? nahi dia acha?

[anon35615524]

Aap to Za'atiya'at p utar aye hain...

[xenerking]

Hahaha....just kidding bro....100% just for fun...

Kahan made in karachi interior aur kahan made in thailand!!

[pwuser152485307098]

Catalytic has been removed by the previous owner, in normal driving the car is very smooth. The issue only rises after 170+

[pwuser152485307098]

lol, I mean 1.8k, so it is 1800, sorry for the confusion.