JC#79's Nordic P11 GT LE

[Mad Maru]

Car is booked in for remap on Tuesday after the exhaust has been finished so hopefully some new power figures and pictures coming soon.

Also a few more things arrived today to add to the pile of items on the to do list:
New licence plates with a personal twist to them and large quantities on epoxy resin chassis paint ready for undersealing the underneath of the car.

I'm still awaiting my car ramps to arrive so I can press on with the protection work, I'll try to get images if I've managed to avoid covering myself in more paint the the car...

 

[Mad Maru]

Right car was worked on today and the exhaust was fitted and the ECU was also re-mapped here are some images of the work carried out:

Big thanks to Incarsolutions for the hard graft today with all my attempts to hamper them in my own individual way

Here are all the goodies that will find there way onto the car:

So taking place today fitting of 3" exhaust including resonator box to help with the tone of the exhaust. Also the BOV was being recirculated to before the turbo as this is the most efficient way to run a turbo'd car with a MAF. Only thing fitted today that isn't in that bundle is my new turbo jacket to keep those temps constant around the turbo.

Backbox

Resonator box

Silicon Hose for recirculating

Car is up

Now that's some lean

Downpipe is off

As is the backbox

Old versus new

Centre section

Amount taken out of downpipe to raise clearance

BOV before

During

Catch tank breather

BOV trumpet

After

You can probably just make out the turbo jacket hidden under the existing metal shield for the stealth look as it was light nordic blue and I doubted it was stay that colour for long

Close up of pipework run

That's where the images come to an end as I was cutting it fine to get the car mapped so paid up and headed over to Hayes Engineering (Dynotech), where Steve from FCTuning was waiting to get to work on ensuring that the car wasn't running lean now there was a free flowing exhaust now installed.

Needless to say Steve and Bob were absolutely top draw and everything went without a hitch and some good figures were given and areas for improvement identified. Now I could avoid mentioning the Dyno results as that is for another thread but as I haven't scanned the sheets yet I'll just put up the figures and provide the proof later.

345bhp and 340 ft lbs of torque which equates to 292hp @ the wheels boost pressure just below 1.3 bar

 

[Simcard]

Why the switch to re-circ out of interest?

 

[edk]

Looking like a really neat installed Rich, the BOV recirc just following that trend.

Great figures, interested in seeing the curves :thumb:

 

[Mad Maru]

Why the switch to re-circ out of interest?

Basically was advised by the tuner and others who have run turbo charged cars whilst using a MAF that recirc is better option as air venting to atmosphere the ECU isn't aware and doesn't get any info regarding this from the MAF so venting back into turbo means there will not be a sudden drop in flow. (if my understanding is correct most turbo car from standard use a flow meter after the turbo unlike the MAF.

 

[almera turbo]

looking goods mate.

 

[Simcard]

Basically was advised by the tuner and others who have run turbo charged cars whilst using a MAF that recirc is better option as air venting to atmosphere the ECU isn't aware and doesn't get any info regarding this from the MAF so venting back into turbo means there will not be a sudden drop in flow. (if my understanding is correct most turbo car from standard use a flow meter after the turbo unlike the MAF.

At the time of my first turbo build i did a lot of research into the air/recirc bov thing. The general concensus was that it didn't even matter. People thought recirc might be better on low boost setups but again no one could back this up. I went with Air and never had a problem. I'd like to re-circ it just to compare and see if there's a difference.

 

[RAJackson]

the recirc'd air going back in before the turbo also acts as a closed loop sort of reservoir for boost pressure. meaning when you re-open the throttle plate you are producing boost from a higher level than atmospheric. so throttle response improves.

two identical cars, one with a BOV and one with a diverter / recirc. the recirc would be faster.

 

[Simcard]

Not entirely true Jabbrah but good theory.

 

[RAJackson]

Not entirely true Jabbrah but good theory.

how so? it makes logical sense. if you completely dump to atmosphere you empty the boost pipes and the turbo has to start over.

if you divert it back, it doesnt. why do you think you get adjustable bovs?

 

[stufagti]

so where did you get your exhaust done in the end?

good figures too.,

 

[Mad Maru]

so where did you get your exhaust done in the end?

good figures too.,

Pipework was sourced via ebay from a primera that lost it's bottom end it was just a matter of getting it fitted and made a little quieter.

---------- Post added at 00:28 ---------- Previous post was at 00:28 ----------

Right after Japfest I needed to correct a slight rubbing of my exhaust on the heatshield and decided to get some powerflex exhaust hangers but as I left it too late at the show most folk had already packed up for the day. []

So off to Halfrauds and grabbed a few and some spares so my mate could sort the issue out. Some hammering and heating of the shield allowed for better clearance but to sort the job properly we are going to remove all the heat shields and heat wrap the exhaust so it can be positioned higher in the tunnel to keep it away from the rear beam also.

Anyway here are some pics of the work being carried out and some closeups of the other bits sorted prior to Japfest and a few bits I carried out at the show as time ran out prior to getting everything I wanted finished before the meet.

My mates company Incarsolutions

Closeup on Turbo jacket under custom heatshield and another pic of recircuating pipework

More of the rear of the car and that exhaust can

Now I had these new road legal number plates to fit as my front plate was damaged last year but time as I say was against me prior to the meet so they went on at Japfest with some help from a few members in getting off the foam fixing pads. I hope you like them as I know many have said they are not a fan of embossed plates but I like them and the aluminium is so cool and my m8 who makes them even did me some vinyl stickers to make the plates more suited to GTT

Before

After (excuse the dead bugs pic taken after trip back from Japfest

Closeup of the stickers showing NPOC and the Mad Maru theme of the car was well happy at that surprise when he handed them over to me last week

 

[stufagti]

can you zoom in for a closer pic mate, cant quite see the effect enough?

 

[Mad Maru]

can you zoom in for a closer pic mate, cant quite see the effect enough?

Really can't zoom in any more was using camera phone for most of pics in this thread, surely you can compare between the before and after images?

 

[mrsingh2u]

cracking motor mate! i've seen it round the areas lol.. looks ace

 

[edk]

can you zoom in for a closer pic mate, cant quite see the effect enough?

lol :lol:

Rich I thnk he was joking mate, seeing how there are a few at different zoom levels .

 

[Mad Maru]

lol :lol:

Rich I thnk he was joking mate, seeing how there are a few at different zoom levels .

Joking surely not I was gonna spend most of Saturday trying to get a few more images at even more zoom levels???

Right just been on FCTuning.com and seen my latest dyno run and Nistune mapping has been uploaded check it out it's only a short video as I was doing the filming and obviously my camera skils suck??? :^(

FCTuning.com

 

[Mad Maru]

My sports cat arrived for GTT can't wait to get it fitted this weekend. Have heard good things about Magnaflow so took the plunge.

Also ordered some 3" flanges so I can easily remove the cat after MOT etc, hopefully next years MOT will be a breeze with this fitted.


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[Mad Maru]

Right well a shortage of 3" pipe work stopped play on getting the new cat fitted ready for its plug and play for testing. However we did manage to heat wrap a section of the 3" exhaust that was banging against the rear beam. Clearance was always going to be an issue but now with additional padding the exhaust is not only well supported it is also quieter and without the crash bang wallop over every bump.

Now to get moving on fitting the various mass of parts for the car before it gets too damn cold wish me luck. lol


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[Mad Maru]

Been a while since I updated this thread on what's been done and planned for this show season. The banging 3" exhaust needed to be sorted so GTT was hoist up in the air, the centre section was popped off and a section cut off so the exhaust no longer caught on the heat shield by the fuel tank.

Little bit of surface rust in need of removal in the coming weeks

Welding

The exhaust now appears to be bang free and I will take it for a full test drive speed bumps and all to check for any other issues but so far so good till the daily is ready and back on the road to take the strain.

Since that update I have started to get the custom downpipe fabricated to increase the flow from the Turbo. The flexi section onwards is 3" so the turbo elbow (currently 2.5") to flexi section is now being made out of 3" mandrel bent stainless steel. We spent the morning mocking up the flange and 90* tight angled bend. The time consuming part is making sure the pipe allows clearance for the bolts.

Plan now all the cutting has been done is to disassemble the pipework confirm measurements are correct and spot weld the pipework to the flange. With any luck the ceramic coating will be in stock in time to get the elbow painted and cured in time for Japfest. High flow 200 cell cat and replacement flexi section will also be fitted.

After Japfest the car will be getting the full rust removal treatment and sealing in preparation for a full blowover with hopefully some subtle changes...


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