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Goodbye mondeo


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36 replies to this topic

#31 jack s

jack s

    Mosquito

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  • Name:Jack
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Posted 22 July 2020 - 05:34 AM

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You need to leave either the Cat or one exhaust box.
 
Long time ago when the site had rolling road sessions one guy had a straight
through pipe all the way and it was down on power compared to everything
else, even non modded cars.
 
A properly designed exhaust can produce more power than a straight through
system. Sounds mad but its been tried and tested.

Have had no sleep and have had some alcohol, so forgive me if I you think I am talking a load of sh.t I do find this subject interesting and my understanding is that on a two stroke the exhaust pipe is critical, there is usually a box at the end, call it an expansion box, the exhaust gas expands within this box which forces the exhaust back towards the cylinder, allowing the unburnt fuel back into the cylinder.

Am I right in thinking that the turbo in the Diesel engine does not require back pressure and that the boxes, silencers restrict the flow. I do realise that the cat restricts the flow, but unfortunately we need something to check the co output for mot.

Purple, it’s 6.30am and I wanted to work on the car today. With the forecasted heat and lack of sleep I might have to reconsider.

I need to know more about exhausts.
  • Macmondy3L likes this

#32 Mondygeek

Mondygeek

    dont listen to me, you'll have horsepower and no money

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Posted 22 July 2020 - 07:42 AM

Hi Jack, the exhaust was custom made all the way from the turbo, the exhaust was the best mod alongside the remap I have done to the mondeo, its so responsive with absolutely no turbo lag, she revs up like a petrol and sounds good on full chat too. The exhaust has been on 4 years now and has never caused an issue. I paid £155 for the exhaust 2nd hand and weighed my catalytic converter in for £150 😂

#33 ST56

ST56

    Clever cloggs

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Posted 22 July 2020 - 09:04 AM

Hi

 

This is my thoughts on the Mondeo, I ran the 2.2 with a full 2.5” system including 2.5” decat pipe which had a smooth blend from turbo outlet. Back pressure would have been minimal with the straight through rear box and 4” tailpipe. After seeing reports of owners reporting a drop in power when going to a full straight through system I always wondered if some restriction might have allowed turbo to build up a higher pressure. 

 

At different times I had tried a gutted Ford cat this killed performance with a massive flat spot in every gear. When swapping cat out for 2.5” pipe pick up was much quicker. A bit like when swapping to a lightened flywheel, faster acceleration but no increase in power. 
 

Of course only way to have tested my theory would have been to check my system on a rolling road and then try adding a silencer somewhere in the system.

 

Peter


MK5 Mondeo 5 Door Hatch 210PS Titanium X Full Bodykit on 19" Y-Spoke Wheels.
Previously Mondeo MK3 2.2 ST Tdci. (ST56MON).

Previously Mondeo MK2 ST200.

Previously Sierra XR4x4.

Previously Escort XR3i, Capri, Sierra, Escorts RS2000, RS1600, Mexico & 1300GT.
.

#34 Mondygeek

Mondygeek

    dont listen to me, you'll have horsepower and no money

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Posted 20 October 2020 - 01:41 AM

So just a little update really, still knocking around often as the audi sites tend to be useless and I could probably get questions answered better here.

Right the audi, absolutely smashing little car, done plenty of mileage in her now and a few mods. Its great on fuel so far and runs like a sewing machine. She's got new rims and running 4 new uniroyal rainsport 5s. Fitted sideskirts and a new tailgate complete with small spoiler. The windows have had a tastful tint (not limo) I've fitted an aftermarket stereo now and upgraded the speakers. Only recently found out its 4wd which will be nice over the coming months.

The mondeo, well she sat on my drive for a while because I couldn't stand the thought of selling or breaking her. When the other half brought up the subject I swiftly moved it along. She has been put back on the road in the few weeks by my father that needed a run around before taking delivery of his van. In a matter of days he was flashed by a camera. Anyway the mondeo is still currently being used by him for probably another 2 weeks maximum but then I've took the hard decision to break her. She's worth more in parts and can help keep many more mk3s alive

#35 raynkar

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    Dash cams, catch 'em out :)

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Posted 20 October 2020 - 04:11 PM

So just a little update really, still knocking around often as the audi sites tend to be useless and I could probably get questions answered better here.
Right the audi, absolutely smashing little car, done plenty of mileage in her now and a few mods. Its great on fuel so far and runs like a sewing machine. She's got new rims and running 4 new uniroyal rainsport 5s. Fitted sideskirts and a new tailgate complete with small spoiler. The windows have had a tastful tint (not limo) I've fitted an aftermarket stereo now and upgraded the speakers. Only recently found out its 4wd which will be nice over the coming months.
The mondeo, well she sat on my drive for a while because I couldn't stand the thought of selling or breaking her. When the other half brought up the subject I swiftly moved it along. She has been put back on the road in the few weeks by my father that needed a run around before taking delivery of his van. In a matter of days he was flashed by a camera. Anyway the mondeo is still currently being used by him for probably another 2 weeks maximum but then I've took the hard decision to break her. She's worth more in parts and can help keep many more mk3s alive


As you mentioned fuel, I pick up my new Hyundai Ioniq on Saturday.
The fact it goes twice as far on a gallon of fuel as my mk4 Focus is something I'm really looking forward to :)
You can put your vehicle info at the bottom of your posts to give details to help others know what you drive :)

#36 Mondygeek

Mondygeek

    dont listen to me, you'll have horsepower and no money

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Posted 20 October 2020 - 04:58 PM

So just a little update really, still knocking around often as the audi sites tend to be useless and I could probably get questions answered better here.
Right the audi, absolutely smashing little car, done plenty of mileage in her now and a few mods. Its great on fuel so far and runs like a sewing machine. She's got new rims and running 4 new uniroyal rainsport 5s. Fitted sideskirts and a new tailgate complete with small spoiler. The windows have had a tastful tint (not limo) I've fitted an aftermarket stereo now and upgraded the speakers. Only recently found out its 4wd which will be nice over the coming months.
The mondeo, well she sat on my drive for a while because I couldn't stand the thought of selling or breaking her. When the other half brought up the subject I swiftly moved it along. She has been put back on the road in the few weeks by my father that needed a run around before taking delivery of his van. In a matter of days he was flashed by a camera. Anyway the mondeo is still currently being used by him for probably another 2 weeks maximum but then I've took the hard decision to break her. She's worth more in parts and can help keep many more mk3s alive

As you mentioned fuel, I pick up my new Hyundai Ioniq on Saturday.
The fact it goes twice as far on a gallon of fuel as my mk4 Focus is something I'm really looking forward to :)

We now run hybrid rav4s at work because the short fast journeys and idling for long periods of time really wasn't doing the diesels much good. The diesels still returned around 40mpg per shift as the hybrids are averaging around 34, those bloody hybrids can rev high but at just over 200bhp they shift too

#37 raynkar

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    Dash cams, catch 'em out :)

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Posted 20 October 2020 - 06:36 PM

 

 

So just a little update really, still knocking around often as the audi sites tend to be useless and I could probably get questions answered better here.
Right the audi, absolutely smashing little car, done plenty of mileage in her now and a few mods. Its great on fuel so far and runs like a sewing machine. She's got new rims and running 4 new uniroyal rainsport 5s. Fitted sideskirts and a new tailgate complete with small spoiler. The windows have had a tastful tint (not limo) I've fitted an aftermarket stereo now and upgraded the speakers. Only recently found out its 4wd which will be nice over the coming months.
The mondeo, well she sat on my drive for a while because I couldn't stand the thought of selling or breaking her. When the other half brought up the subject I swiftly moved it along. She has been put back on the road in the few weeks by my father that needed a run around before taking delivery of his van. In a matter of days he was flashed by a camera. Anyway the mondeo is still currently being used by him for probably another 2 weeks maximum but then I've took the hard decision to break her. She's worth more in parts and can help keep many more mk3s alive

As you mentioned fuel, I pick up my new Hyundai Ioniq on Saturday.
The fact it goes twice as far on a gallon of fuel as my mk4 Focus is something I'm really looking forward to :)

We now run hybrid rav4s at work because the short fast journeys and idling for long periods of time really wasn't doing the diesels much good. The diesels still returned around 40mpg per shift as the hybrids are averaging around 34, those bloody hybrids can rev high but at just over 200bhp they shift too

 

This one is only 139hp, but that’s more than enough for the commuter run.

Depending on how it’s driven it should get 60-70mpg on motorways. 

 

Not actually quite twice what the mk4 Focus gets, but twice what the old mk3.5 got.

The main thing being that it will be so much more comfortable than the Focus is.


You can put your vehicle info at the bottom of your posts to give details to help others know what you drive :)




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