Single turbo advice.

[carl0s]

I am considering thinking about (thinking about considering?) going for a small single turbo at some point.

 

Can somebody comment on the following questions?

 

1. My facelift Jap car already has a MAP sensor, so that should allow for the actual air mass to be calculated from the pressure/density(inverse of temp) for proper fuelling with a fuel controller, right?

 

2. I want to go the piggyback route (autobox..), so should I look at a MAP2 ECU or an eManage ultimate? I already have a MAP sensor so my car doesn't exactly need converting from MAF to MAP like the yank/uk cars, so does that negate one of the MAP2's main usefulnesses?

 

3. I would want to retain the stock airbox and intercooler. Is this feasible or do some things just get in the way? My SMIC is very good so I don't want to be told an FMIC will work better, I just want to know if it is actually physically possible to do it.

 

Obviously I will need bigger injectors and whatever is required to make them work with the piggyback (rails or whatever.. I have no idea). I want to keep costs down and don't have big horsepower targets or anything. I just want to remove the artificial 4,000rpm lag and have a little extra power.

 

I want to use a cast manifold, so basically I am looking at something like the PHR Street kit, except I would use Arnout's manifold.

 

Any ideas?

 

thanks

[Tones]

First off id be buying this here if i were you, great value and everything u need...http://www.mkivsupra.net/vbb/showthread.php?t=132458..Im sure if u really want to keep the oem airbox u can, anything is possible, im sure homer or uk-rich who is selllin the kit would be of great help to you

[Lee P]

If you dont want big horse power the you wont need injectors or the managment, you can go single and run on the stock ecu and injectors fine. You would have to uprate the pump though. You would get 420bhp without any probs but the torque from the single would be the big benifit.

 

You can use the stock air box if you want but it would need modification.

 

I would uprate the side mount but keep an eye on the intake temps.

 

Lee

[Jake]

First off id be buying this here if i were you, great value and everything u need...http://www.mkivsupra.net/vbb/showthread.php?t=132458

It's not got a cast manifold though. Also Carl won't be wanting a a T67 turbo.

Is that used kit good value at £2½k ? Aren't those kits just over $5000 brand new?

[Tones]

Well its advertised at 2.5 so i reckon at this time of year if u went up with a good cash offer close to that u would seal it, has custom cold air box and midpipe and downpipe, both pipes dont normally come in single turbo packages?

[carl0s]

Yep the T67 isn't what I'm after, and I want the cast manifold, and I'm not going to buy anything just yet anyway.

 

I fitted one of Chris' SMICs not long ago and would like to retain that.

[Tones]

Bl stage one kit is pretty good i hear, smallest u can get is the 57 turbo, probably what ur after? $3700 for the kit, so about £1800

[carl0s]

Bl stage one kit is pretty good i hear, smallest u can get is the 57 turbo, probably what ur after? $3700 for the kit, so about £1800

 

You're not getting this cast manifold thing are you?

[Tones]

You're not getting this cast manifold thing are you?

 

Well ask them to leave the manifold out then! sheeeesh

[Sean1933]

I am considering thinking about (thinking about considering?) going for a small single turbo at some point.

 

Can somebody comment on the following questions?

 

1. My facelift Jap car already has a MAP sensor, so that should allow for the actual air mass to be calculated from the pressure/density(inverse of temp) for proper fuelling with a fuel controller, right?

 

If you dont want to run more than 1.1-1.2 bar then the stock MAP senso will suffice.

 

2. I want to go the piggyback route (autobox..), so should I look at a MAP2 ECU or an eManage ultimate? I already have a MAP sensor so my car doesn't exactly need converting from MAF to MAP like the yank/uk cars, so does that negate one of the MAP2's main usefulnesses?

 

In you position i would would upragrade to an emanage as this would be more than capable of handling a small single that will act alot like the stock setup (albeit in parallel mode)

 

3. I would want to retain the stock airbox and intercooler. Is this feasible or do some things just get in the way? My SMIC is very good so I don't want to be told an FMIC will work better, I just want to know if it is actually physically possible to do it.

 

If you want to retain the stock airbox then this is possible but it will need modification to work. I would also keep the sidemount as its a CW one

 

 

If i was you i would go for the PHR street kit as this will be neigh on bolt on and good quality. Or, if you feel your capable then piece your own kit together made up of arnouts manifold (requires modification if i remember correctly), a 61mm tubby, custom downpipes, etc.

 

Hope that helps mate

[carl0s]

If i was you i would go for the PHR street kit as this will be neigh on bolt on and good quality. Or, if you feel your capable then piece your own kit together made up of arnouts manifold (requires modification if i remember correctly), a 61mm tubby, custom downpipes, etc.

 

Hope that helps mate

 

What needs modifying with Arnout's manifold?

 

I'm only concerned because there wasn't much good said about existing cast manifolds until Arnout had his design made. There were concerns about wastegate size with the other ones, and as it's for the same price I'd rather have the better one.

 

Which reminds me.. where do wastegates come into this? Does the PHR street kit come with one. I suppose I'll need some kind of overboost protection such as a wastegate..

 

I suppose I should be asking my questions to PHR really shouldn't I. They don't say whether their street kit is meant to hookup to an FMIC or the stock sidemount..

[Sean1933]

What needs modifying with Arnout's manifold?

 

I'm only concerned because there wasn't much good said about existing cast manifolds until Arnout had his design made. There were concerns about wastegate size with the other ones, and as it's for the same price I'd rather have the better one.

 

Which reminds me.. where do wastegates come into this? Does the PHR street kit come with one. I suppose I'll need some kind of overboost protection such as a wastegate..

 

I suppose I should be asking my questions to PHR really shouldn't I. They don't say whether their street kit is meant to hookup to an FMIC or the stock sidemount..

 

I cant remember but i just did a quick search and i think it was just a case of all pipework had to be customised.

 

Yes the PHR kit comes with a WG as you will obviously need to control boost or it will just keep building until either the tubby cant produce anymore are the engine goes bang....my money would be on the latter

 

The PHR kit probably comes with pipework for a front mount intercooler, however it wouldnt be hard to piece one together for the side mount.

[Jake]

I should be asking my questions to PHR really shouldn't I. They don't say whether their street kit is meant to hookup to an FMIC or the stock sidemount..

Could be either - makes no difference to the turbo kit required.

 

 

 

 

EDIT :

Hmmmm, Ignore that. Seems I'm wrong there.

[carl0s]

Could be either - makes no difference to the turbo kit required.

 

 

 

 

EDIT :

Hmmmm, Ignore that. Seems I'm wrong there.

 

Hmmm. You raise a good point though. One would expect the FMIC kits to be made to mount up to the same place as the stock SMIC, so it shouldn't matter.

[Jake]

I forgot that the PHR turbo kits have the pipework from the compressor going down into the engine bay then round in front of the OSF wheel to the FMIC - not through the inner wing using the same route as the SMIC.

[Sean1933]

Hmmm. You raise a good point though. One would expect the FMIC kits to be made to mount up to the same place as the stock SMIC, so it shouldn't matter.

 

Not the case im afraid mate especially on the PHR kits as their pipework goes straight down, apposed to taking the stock route. See the PHR website pics and you will see what i mean.

 

EDIT: Beat me to it Jake!

[bromy]

What actually makes you want a cast manifold, is it issues with tubular ones cracking? if so the BL tubular ones are very reliable

[carl0s]

What actually makes you want a cast manifold, is it issues with tubular ones cracking? if so the BL tubular ones are very reliable

 

Reliability, compact package, and earlier spool.

[bromy]

Reliability, compact package, and earlier spool.

 

I would not worry about early spool as you will be wanting to use a smaller turbo anyway like a T61, you could also go for a dbb unit that will spool a few hundred rpm earlier. I can take you out in my T61 if you like as I'm only in Macclesfield to show how early it spools

[carl0s]

Is yours an auto or manual?

Thanks for the offer - really kind of you and I might take you up on it

 

I really do think a cast manifold is better though. It's just never going to break. I like that sort of thing, hence liking Jap cars and hating things like wireless keyboards.

[rob wild]

Hey Carlos

 

First off have you been out in/driven a single? Because i found it to be a very different driving experience from BPU. Personnaly i would go down the PHR route as the fittment and quatilty of the part i have found to be very good and when i was fitting it there was little fab work to be done.

 

You could retain your CW SMIC which i believe from reading on here are OK for sub 500FWHP. Personally i would not retain the stock airbox. I tried originally to do this but it became more hassle with positioning and alignment than it was worth. Their are a few good examples of airboxs on single turbos i believe that ARC do one. ECU wise i really like the EMU as it comes with plenty of useful features plus mapping wise their are people like Ian C who could map it correctly for you.

 

Injectors, i would go with a good quality injector like PE. I went for PE 650cc which were excellent for my old setup. Plus 650cc would give you some head room when mapping.

 

My PHR stage 1 + EMU + PE 650cc made 440RWHP on hypers dyno at 1.28bar which i don't think was bad at all

 

If you want to see one first hand your more than welcome to have a look at mine at the next NW meet

 

ALL IMO

[carl0s]

I haven't been in one, no, but with a super small dbb single and a cast manifold, I expect I should be seeing more power at less than 3500rpm than I do with the half-twin setup at that point, wouldn't you agree?

[bromy]

Is yours an auto or manual?

 

Manual

[carl0s]

The stock air filter is just badass though. All you have to do is lift the flap and you can see the dirt. Then you take it out and look at the back and you can see how great is it at filtering.

 

The main purpose of the filter is to filter and protect, and I just might not have that confidence in another system.

 

Is it really a PITA to retain?

[colsoop]

You could retain the stock airbox, i can't remember who it is but someone is running a stock airbox with their single. T license runs a stock SMIC i believe. You just need to make sure the way you route the ic pipe clears the airbox lid