[Bobby Singh]

Hi all,

Im planning on getting a Mark4 turbo 150 or 180hp. In terms of power I wish to have 250hp +.

I understand a remap will take the engine to around 200hp. However, I understand from this point the compression ratio is too high. The 150 and 180 hp is 9.5:1 CR and the 225hp is 9.0:1, the 225 engine can be taken to around 270ish hp. My understanding on this matter is that the 225hp runs a 04 turbo and also has lower cr.

Therefore, my question is can the standard 150hp pistons be skimmed? also what injector's are required?

Also, what other parts will be required for a true 250hp? In terms of turbo Im planning on using a 04 with manifold from the 225hp engine.

Thanks for your help

Bobby

 

[MK4 GTI TURBO]

I just had my AUM remapped by Jabba and they got 223bhp out of it. The next stage I understand is a change of turbo (like an IHI conversion []) and that will see it around 270bhp. Only thing I'm worried about is traction, I mean it's bad enough at 223 bhp in the wet!

 

[LIAMH]

The compression ratio has no impact on the tuning potential until you get to over 350bhp - the 200 bhp you mention is purely down to the Turbo size

You don't need to touch the internals of the engine for the power your after its just the route you take getting there and your budget

I wouldn't bother messing around with a K04 from a 225 if you want 250+ go straight for one of Jabba Kits more potential and Cheaper in the Long run..

 

[Bobby Singh]

Thanks Guys.Its good to know that the CR does not need lowering. Lianh do you know the esimated cost of a IHI turbo for 250+?? Also, what injectors and intercooler are required for this power level? I want to keep the ACT around 40 deg.

Thanks

Bobby

 

[LIAMH]

Checkout Jabba'S web sit for info - going for around 280 you shouldn't need to upgrade the intercooler, you wont be running much boost at that level with the IHI so your temps will be low compared to a K04

 

[Geeba]

Yup Liam's nipped it in the bud for you Bobby. www.jabbasport.com also you could add a Down pipe and cat on-route to the Big turbo option as you can use that with the Jabba Conversion at a later date... good for a few extra ponies!

 

[Bobby Singh]

Thanks for your help guys. I've been looking at the Jabba web site and those IHI turbo are very expensive esp for the power level im looking for. Therefore, what are the disadvantages of me running a K04 at 250ish hp?

Again what injectors are required for 250hp?

Thanks

Bobby

 

[Geeba]

IT will struggle to make 250hp... some of the guys on here are producing 240ish I think... the late cars have the bigger injectors anyway...

 

[Geeba]

Hmmm think once you shop around you'll see that the Jabba kits are among some of the best price/performance packages... some tuners charge more than that for KO4 conversions with power figures around the 230ish mark.... the EO5 charger is another route you could try think they make around 260hp?

 

[LIAMH]

It will work out better value because you will probably want more power at some stage and start thinking about getting a proper big turbo

so you might as well have got it in the first place

Unless your getting a K04 cheap and you know a place thats going to get it up and running (fitting , mapping etc ) for a good price i wouldn't bother

 

[Bobby Singh]

Ok guys thanks for all your help. Sorry if i sounded abit shocked at ?1,200 for a turbo, Im from a Ford Cosworth back ground where for ?600 you get a monster turbo like a T3/4 hehe.

My mate is currently running a K04 in his Golf Rallye and is looking to upgrade at some stage and therefore I should be able to get my hands on that fairly cheap.

I shall be using Stu @ motorsport development based in Blackpool for mapping.

Btw is it true that Jabba does not do live mapping on the road? therefore no det checking is done on the road?

 

[awesomeade]

Straight to that kind of BHP in one hit:

http://goapr.co.uk/store/bin/productos.php?ACCION=detalles&ProductoID=ad7817cec560a3fa785f5007a833e0db

 

[Stewart]

Bobby, the only reason Motorsport developments do mapping on the road is because they cannot afford a rolling road!! Motorsport developments know jack about tuning Dubs, ive been to them before and they were clueless.

Jabba map on a rolling road.

 

[Bobby Singh]

Hey Stewart,

Its not a question of not being able to afford the rolling road - its a question of doing things right. A car needs to be set up on the road not a rolling road. For example the air that hits a car at 100mph on the road is different from what rolling road fans can produce. The loads on a engine are different on the road than a rolling road. Remember a rolling road is a diagnostic tool.

 

[Geeba]

Yup and companies like Jabba have been specializing in Forced Induction VW's since they were introduced.... know where my hard earned would be going...

Rollong road a diagnostic tool? hmmmmmmm... oh ok then....

 

[LIAMH]

Is that the Rally that was in PVW and Golf+ mags recently

Who Did the mapping for that ? not suprised he kept blowing engines

there were some very dodgy things going on with that car power wise

Stick to Companies that specialise in VAG'S

picked up a copy of EVO today and Jabba and AMD are in it

Jabba's Name isn't mentioned but the Grinnall is powered by Jabba IHI kit

362 bhp - 543 bhp/Ton - OMG [][] "Nothing short of ballistic"

 

[Bobby Singh]

Im sure Jabba can produce the goods, but I rather have my car mapped on the road rather than rolling road due to the above reasons. Liamh thats the one i rather not go into too many details about that car. I have made him aware of what checks need to be done and he has had the car set up accordingly.

 

[LIAMH]

So you think your going to get better results than JABBA revo AMD APR etc from a company that doesn't have a rolling road

Sorry mate but i don't believe your going to get any better set up- for a start where are you going to find a bit of road that you can do a constant 100 mph and play with a laptop at the same time to get the best from the "AIRFLOW"

I read both articles on that car and all he ended up with after blowing a couple of engines was exactly what any of the above tuning companies produce for a TT/S3 engine with a remap day in day out on loads of cars

From your first post you obviously know very little about the 1.8T and it potential so to question the way JABBA, AMD etc etc going about their tuning is a bit rediculous

For the record my car has 374bhp on its last rolling road - the kit has been on the car for a year with no problems......Damn i should have gone to a tuner that remaps on the open road, silly me

 

[Bobby Singh]

Yes I do know very little about the 1.8T hence me posting here. However, the methods used to map or set up a car have the same principles. I can't believe you think mapping a car on a rolling road is safe. Each to there own I guess. Im not here to argue with u mate.

Thanks for your help.

 

[MRK IV]

Whose rolling road Liam?