205 Gti 6 Conversion Problems

[sharpy 0]

Hi, have a 205 1.9 gti shell with a gti 6 engine in it. is standard apart from induction kit and decat as far as i know. Anyway getting on to issue lol....I have had car for a month or so now, and the car seems to be reluctant sometimes. Sometimes you put your foot down and its like a like a rocket! But then sometimes, it realy doesn't seem to pull as well as it should :S seems just not to pull as hard and fast....only thing i will say is, the exhaust isn't the best, and the baffles are rattling around inside. Also, very rarely it does kind of "splutter" and just dies when puting your foot down, then take it off, and it is ok again....Any ideas wot it could be? PLEEEEASE help people Thanks

[DrSarty 90 1 Cars]

Well the exhaust needs fixing/replacing for starters. Try that and see what happens.

[sharpy 0]

i know....but it's the kind of thing, i'd rather know if it's something else and spend the money on that...rather than an exhaust, if you get me lol

[kyepan 291]

do you have the diagnostics port attached, if so putting it on the machine to check for fault codes might be a start.

 

are there any prevailing conditions that coincide with the issue, damp, cold, hot, just started, hot car, after being stationary, waiting in traffic.

 

could be anything really... also have a look at some of the conversion threads on here, there are bound to be many similar issues.

 

searching through google will help as it can do gti 6 and other fragments to help with your search if they are strings under four letters.

 

search string site:http://forum.205gtidrivers.com

[sharpy 0]

i personally think it seems slower once its warm :S ... cud be wrong tho. just doesnt seem to have that pull anymore! what you think? some1 said it may be battery related...something to do with battery terminals or something? or AFM maybe?

[maturin23 10]

If you consider than an engine is effectively an air pump, and that the easier it is for the air to flow through the induction/combustion chamber/exhaust the more power you will get for a given amount of fuel, then the very first thing you should do it make sure your exhaust isn't causing any unnecessary restriction.

 

I had a blowing gasket between the manifold and downpipe on my Mi16 - when the downpipe was cut and correctly reangled and a new gasket fitted my arse-dyno reckons it was at least 10bhp up at the top end. This was with a nearly new system too.

 

Change your exhaust, then let us know if the problems remain. You'll be one step closer to a sorted car either way!

Edited February 24, 2010 by maturin23

[sharpy 0]

Thats some brilliant advice mate, thanks for that anyone know of any exhaust systems for sale? I have seen a "sportex" system on ebay, from downpipe to back box, £159.90. Any advice or criticisms on this system or any other? Btw, what people think to that battery terminals thing?

[sharpy 0]

and i forgot to say, the power loss seems to be more up top.....and i seem to be using more fuel

[sharpy 0]

Any1? Anything lol?

[DrSarty 90 1 Cars]

Try and stop using text speak first please. You'll get more replies..honestly. We're a funny crowd on here.

 

So:

You've had the exhaust advice twice, simply because you explained how bad it was. Rattling baffles and an obviously broken (not functioning properly) exhaust system as Maturin said should not be overlooked as it's part of the whole deal.

 

But..I don't think that's the complete story. It'll help, but we don't know any history of the install and how thorough a job it is. So don't expect a properly working exhaust to be the guaranteed fix.

 

Any exhaust at the moment will be better than one with broken baffles in. Fit just a standard pattern 205 exhaust from ATS, Kwikfit, ECP, GSF whoever. Cheap will do for now.

 

Next:

There isn't an AFM on a GTI6. Do you really know this engine? Once your exhaust is working properly, we can see if any poor running symptoms remain and go tracking them.

 

It could be a poor installation with bodged wiring, or a leaking inlet. Bad fuel pump or double relay; simply lots of things, or just one, like your exhaust. And yes, great fitting battery terminals with good quality cables is extremely important.

 

Give that a bash and get back to us.

Edited February 24, 2010 by DrSarty

[sharpy 0]

Oh right, thanks for that. No I don't really know the engine, I'm new to the Peugeot scene. Ok, wel thanks alot, I'll give exhaust system a bash. What is a good system to go with? The sportex system any good at all? There is also a second hand magnex exhaust on pistonheads. Any advice?

[CosKev 16]

You need to check what downpipe etc is fitted to car now really before going out and buying a standard fitment system.

 

Remember your cars not got the standard engine in

 

So exhaust could be custom job mix and match

[sharpy 0]

Yeah I did wonder about that to be honest. Well if I got a new back box and then get it fitted with custom downpipe all way to new back box? That would be ok l, and maybe cheaper?

[Garry 1]

My Gti6 engine used to misfire as described and it was cured by changing the coolant temperature sensor and the Lambda probe.

I would try the CTS first as it is cheapest, £20 or so.

[taylorspug 7]

You wont find a standard downpipe that will work with the Gti6 engine, they always need chopping and reangling to suit the manifold.

 

Also i dont personally think the earlier 3 piece systems are suitable for even the standard Gti6 lump, as ive found they can restrict it somewhat, due to their smaller diameter after the centre box compared to the later 2 piece systems. I did back to back tests with an early and late style system on my car when it had standard induction and found a noticeable difference with the late setup, especially at the top end. The exhaust is still on the car now running 187hp with Jenveys, so i dont think its restricting it now.

Edited February 25, 2010 by taylorspug

[sharpy 0]

Garry: Ah right, spot on Garry, thanks. Would that account for possible performance loss aswell?

Taylorspug: Right, i see what you're saying. Can you suggest any exhausts then? or a way of making one etc? When you say two piece, do you mean a downpipe and then a full exhhaust from there attached all together? Thanks lads

[sharpy 0]

Hi, some new information on the GTI6 (could be unrelated) i noticed a whining today, turned the engine off and obviously it stopped. I then turned the key but did not turn on the engine and it appeared to be the fuel pump. Its was like it was primeing, but continuously :S and it didn't sound healthy. It was a horrible wine, but it did eventualy stop after 10 minutes or so of driving. Then once i got home, i did it again, and it was (as i can only liken it to) like a "missfire" of the fuel pump. It sounded awful and was kind of cutting in and out almost "LIKE" a missfire. Really wierd, anybody know what it is, or could be? Thanks alot

[DrSarty 90 1 Cars]

anybody know what it is, or could be?

 

Yeah. You have a s*itty exhaust and s*itty fuel pump (or at least wiring/power to the fuel pump).

 

I believe you are answering many of your own questions here. You now have two things to address (plus potentially the ECU coolant temp sensor - making three), so I would advise tackiling those first and getting back to us if you have any more issues.

Edited February 25, 2010 by DrSarty

[dcc 855]

A tank of fuel £50, spending hours of time wasted on following your tail arround an engine bay worth atleast £100, A trip to somebody who could solve this problem for you priceless. Somethings we can help, for everything else, there is common sense.

[taylorspug 7]

Garry: Ah right, spot on Garry, thanks. Would that account for possible performance loss aswell?

Taylorspug: Right, i see what you're saying. Can you suggest any exhausts then? or a way of making one etc? When you say two piece, do you mean a downpipe and then a full exhhaust from there attached all together? Thanks lads

 

Standard Bosal/Arvin etc will be fine, just makes sure its a good quality system as some of the lower ones can be all over the place size-wise. 2 piece means it comes as a downpipe and centre section as one piece, then a seperate backbox.