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James' VR6T 4 Motion Golf. Now SOLD!

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I'm sure Wayne will do an excellent job with the mapping. He knows his stuff and been in the game for a long time.

I'd be interested in the air fuel ratio before and after.

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  • Well after a really early start this morning I have sold my Golf to a guy from Dartford, he has big plans for more power, a roll cage and getting it road legal again, I agreed to deliver it for some b

  • 2015 is now here, the next chapter in the life of the Golf is about to begin!  After the low boost set up in 2014, I am happy to run that in 2015 whilst I go collecting parts again, the plan is 450 bh

  • Just spoken to Wayne and paid him, he has squeezed 280.6bhp at 6450rpm and 274 lb/ft torque at 4300rpm with 6psi boost, so I am quite happy with these figures, from a stock block and piston, he has al

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I'm sure Wayne will do an excellent job with the mapping. He knows his stuff and been in the game for a long time.

I'd be interested in the air fuel ratio before and after.

I can assure you the "before" fuel ratio is very rich, as for after I have no idea yet.

 

 I have to say, anybody who maps engines has to be a bright cookie, the amount of information that has to be deciphered is mind blowing, graphs, numbers and then you have to know about the ecu etc, it blew me away.

 The type of company that attend your house and claim you will see 30 hp more I now believe to be a bit dodgy, it is important to see what is happening on the rollers, my map will not be the cheapest but I expect it to be a job well done.

Couldn't agree more. Sensors need to be logged so you can see what is happening. Whether this is done on a dyno or on the road.

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I arrived at the rollers this morning at 10:00 and left at 17:00 without my car, Wayne did not do anything else other than work on my car for the whole time, he will be back at it on Monday, the car is still in the rollers and strapped down, it is unbelievably time consuming.

 The amount of information is as I have said, simply mind blowing.

Excellent results with little set up. I bet you can't wait to see how it drives :)

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I am looking forward to Outlon Park to see how it gets on yes, I will fit my oil cooler before I go too.

 

 After speaking with Wayne the mapping guy, he has said he will assist me with suspension set up over the winter, so adjustable top mounts will be ordered along with the rest of the polybushes etc. Hopefully with modest power and a good set up the Golf should be a pleasure to take to the track and not a heavy lump as it is now.

james I've skimmed through here but there is so much waffle I must have missed the important bit... were you running that turbo setup on the standard map but just using a rising rate fuel pressure regulator to increase the fueling on boost?

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james I've skimmed through here but there is so much waffle I must have missed the important bit... were you running that turbo setup on the standard map but just using a rising rate fuel pressure regulator to increase the fueling on boost?

 Waffle, what do you mean Tom, all friendly banter on this thread as well as progress updates.

 

I did yes, the car went to the Briskoda mega meet the day after everything was bolted together and it also did two hours at Bedford for the How Fast event.

 Worked a treat if a bit thirsty.

 

 Why do you ask?

I did yes, the car went to the Briskoda mega meet the day after everything was bolted together and it also did two hours at Bedford for the How Fast event.

 Worked a treat if a bit thirsty.

 

 Why do you ask?

 

I was just thinking about ultra low cost turbo conversions on naturally aspirated engines, I get asked it about it all the time was just wondering if it worked ok, extra fueling and retarding the ignition on boost are the 2 biggest headaches with DiY turbo conversions, all the rest is just basically plumbing and a little bit of welding..

 

I guess it would work much better on a mass air system rather than on speed density systems as well... it's all food for thought.

 

how is/was the rising rate regulator plumbed into the fuel system? in fuel return line to from the oem fuel rail?

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My whole project has been an ultra low cost turbo conversion, I have encountered some problems and these have been from the ECU fault codes, SAI delete raised a fault, post CAT lambdas raised a fault, Fuel vent evap canister removal raised a fault and most of the time at the rollers on Friday was coding out faults.

 We have made no alterations to ignition, only fuel pressure increase via a regulator, this is placed inline with the fuel rail, it has vacuum adjustment so as the fuel pressure drops at tick over and rises to about 4 bar when accelerating.

 The MAF does need mapping as the turbo will suck more air over the MAF exceeding the upper limit in the map making the ECU panic and cause issues at high rpm.

 

 In essence, we are running a low boost, somewhere around 7-8psi, so I guess there is a little more to it than a bolt on drive off turbo conversion, mapping would be required for best results.

 

 On track it went well though but it massacred fuel, at Blyton Park I drove 60 miles and used £80 worth of fuel!

I had this concept in my mind about having a 5th injector which is common with the others electrically, put only switches on when an air pressure switch in the intake manifold come on, but this would be more difficult to engineer having to add a fuel injector boss to an existing throttle body or intake plenum.. but just simply using a RRFPR could be a really good alternative

 

I guess if you got it just right it would still pass the emissions test too, because when the engine is under little load there will be virtually no boost showing on the guage so it should run closed loop still.

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You would have to make sure the fuel pump is happy with the higher pressure, I am still running the stock pump that was on the car and it works ok.

 

 As for the extra injector in the inlet manifold we discussed this as an option if we could not get enough fuel through the stock injectors, however we have not needed this, an alternative is to fit different injectors, in my case the injectors from a 3.2 TT would be plenty as the extra air is not such a great amount. Some of the high spec VR turbo mods run a 630cc injector, I don't need these...... yet.. 

 

Best thing to do would be to bolt something together and see how it goes, the guy who helped me has just done a 2 litre 8 valve engine for a MK 2 Golf, it pushing out a respectable 260hp with a lowish boost set up.  Then you have his own car which is an ABF turbo shoving 475hp but that has had a lot done to it and is far from stock.

waffle.jpg

?

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I like syrup on my waffles, best I ever had were in Brussels, Belgian waffle at its best.

 

 Anyway Sparkly when will be seeing the racing barge go racing?  So far it has been polished a lot from what I have read  ;)

waffle.jpg

?

Didn't you mean that for my Fabia thread?

Anyway Sparkly when will be seeing the racing barge go racing? So far it has been polished a lot from what I have read ;)

You forgot about his little bump also hehe

Sent from my Galaxy S5

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You forgot about his little bump also hehe

Sent from my Galaxy S5

:o  little bump?  is Sparkly Pregnant? 

Would you like a smoke and a pancake? You know, flapjack and a cigarette? No? All right. Cigar and a waffle? No? Pipe and a crepe? No? Bong and a blintz? No? Oh, well, then there is no pleasing you.

Barge project is on pause as trying to fund a wedding. So far a ding on the boot in Manchester car park is my best update. Sorry!

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:D

http://youtu.be/JjLmY0SxoWM

 

 

I feel you are missing the point Sparkly, if you were to make the barge a racer it would save you from the marriage, I am sure this would be favourable? 

Would you like a smoke and a pancake? You know, flapjack and a cigarette? No? All right. Cigar and a waffle? No? Pipe and a crepe? No? Bong and a blintz? No? Oh, well, then there is no pleasing you.

Barge project is on pause as trying to fund a wedding. So far a ding on the boot in Manchester car park is my best update. Sorry!

As much of a racing barge as mine is a 1.8t Fabia ;)
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Got a text from Wayne today, he has sent me a picture of the dyno graph but cropped it so that all I can see is the graph, it is a lovely smooth curve I have to say but I have no idea what power he has squeezed out of the Golf.

 I guess I will get to see the numbers when I pick it up.

 

 It hasn't been simple, it took hours to eliminate the fault codes for the items the engine no longer has and he has spent an hour or two this afternoon perfecting the curve as it had a dip at 5500rpm, this is from the variable valve timing, after an hour I got a second text with a lovely curve  :happy:

Great news :)

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Charts.

 

With the dip

 

post-70698-0-35216900-1413833339_thumb.jpg

 

Dip cured  :happy:

 

post-70698-0-53354000-1413833358_thumb.jpg

Now we just need the scaling! :D

Does that say 224hp?

I can also see 100% drivetrain efficiency! which confuses me! especially with a 4x4.

But then again I no very little about all this.

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