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Mashed Potatoes

Had my 535D on the dyno this weekend!

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On 12/9/2017 at 8:14 PM, Mashed Potatoes said:

 

Mine's a 286BHP.  370BHP is a little low especially with those mods, but it does depend on who mapped it and how high they were willing to push the turbos. Does it smoke at all? I guess it's smokeless at 370BHP? I doubt the exhaust would be holding it back, from memory it's just over 3 inches of combined pipework on the 272BHP engines. A simple test for this that would only take an hour is to get either a garage or yourself if you're OK working under the car to pull the exhaust off at the end of the downpipe and go and drive it down the road. It'll sound like a jet engine BUT if the exhaust is causing your restriction, you'll know about it if the car suddenly flies.

 

I am beyond this power now, making just over 420BHP and 610ftlbs and I'm still using the standard exhaust system on the LCI. It flows well.

Incredible. Would be good to time it 0-62 when you have your new tires and a dry day! Must be sub 5s

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38 minutes ago, reggie59 said:

Incredible. Would be good to time it 0-62 when you have your new tires and a dry day! Must be sub 5s

 

It does do about 5 seconds to 60. I need to borrow the Vbox from work to time it properly with GPS. Video timestamps from a camera in front of the steering wheel though do have it at about 5 but that's without brake boosting it first. A warm dry day with hot tyres, brake boosting it and some good luck would have it in the upper 4 seconds to 60 slot. We're currently developing a new larger turbo for it too that'll allow me to run up to 3 bar boost, but also has some drastic changes on the exhaust side of the turbo so I'm hoping for 460-470BHP without methanol. After that I'll well and truly be out of fuel pump on the standard 286BHP one. I'll need to source an R90 model from a pre-LCI 535D or something like that. These can flow more fuel.

Edited by Mashed Potatoes

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Unfortunately the turbos are different and I don't know if you can bolt the 286BHP ones to the 272BHP manifold. They do look a lot different. I can have a look when I am back in work for you tomorrow, and have a chat with a few people and see what I can find out about the 272BHP turbos. What the internal differences are etc. :) I've never pushed a 272BHP one to 400BHP before, but it does not mean it can't be done!

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1 hour ago, Mashed Potatoes said:

Unfortunately the turbos are different and I don't know if you can bolt the 286BHP ones to the 272BHP manifold. They do look a lot different. I can have a look when I am back in work for you tomorrow, and have a chat with a few people and see what I can find out about the 272BHP turbos. What the internal differences are etc. :) I've never pushed a 272BHP one to 400BHP before, but it does not mean it can't be done!

 

The small turbo orifice is different and pre-LCi has 4 fixing holes whereas the LCi has 5 holes. I'm not sure about the large turbo.

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2 hours ago, Steve AD said:

What are the costs in these mods to reach around 400 bhp ???  Roughly 

 

400BHP requires DPF removal as a minimum. Ideally an intercooler too. The standard turbos are good for 400 no problem.

 

Stage 2 mapping, an intercooler (entirely up to you who you use for this, but we supply and fit Wagner Tuning parts - the quality is on another level compared to other manufacturers) and either a smashed out DPF or a DPF removal pipe (Wagner also sell one) plus fitting. You'd be looking at about £1400 to do it mapped with a Wagner intercooler and DPF pipe. I am assuming your car is the LCI model?

 

A stage 1 on these makes about 360BHP on the LCI engines, and that can be done on all standard components. That would be £228 inc.VAT.

Edited by Mashed Potatoes

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16 hours ago, Ionutz said:

Thank you very much for your effort.

 

Further to this, I've heard back from the turbo people I use and they would not recommend pushing the earlier turbos as hard. Internally they are different to the LCI ones. :( They're recommending max boost of about 2.0-2.1bar on the earlier turbos.

Edited by Mashed Potatoes

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Mine a pre lci. (2006) delete remap and intercooler is all that’s required...Wagner intercoolers...how much are these alone ? The last time I had major surgery under the bonnet my local specialist said he could remap for me up to 400bhp,as much as ivw replaced bits n bobs my engine is solid and well maintained 

Edited by Steve AD

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The Wagner intercooler on its own is £670.00, but unfortunately they don't make DPF delete pipes for the pre-LCI model. They are available though or your DPF could simply be smashed out. If he can get you 400BHP on the pre-LCI turbos then go for it dude if he's confident in doing it. It may smoke a little at that power level though, you need a lot of boost for a clean burn at 400BHP.

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Hey MP have you seen this video of a pre-LCI. From memory the guy is from Portugal and posts on another BMW site, not which one.

 

Edited by Blobby

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I have dude yes! I looked at getting my turbos from the ones in the video too! Eventually when I get round to sorting the exhaust it'll sound like that. Not that I've had the tips in a box for the last 5 months or anything! Might get round to it next year!

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