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Hey guys,
im bout to put in a big turbo in my 6 MPS (mods in signature)
im after someone's wise words of tuning in regards to boost tapering in at certain RPM ranges due to me planning to do this on stock block.
my original thought:
planning to have 14PSI to 3500RPM then 18-20PSI till 5500rpm then taper down to 14PSI @6000RPM+
then luke has briefly recommended:
3500rpm 17-18 psi, 5500rpm 15-16psi, 6000rpm 12-14psi.
any input would be appreciated guys
Cheers
~Ray
Let me start this off by say i'm not an expert and take no responsibility if you blow your engine :p
If it was me i would start off with something like 15psi to 3500rpm then up to 17psi by 4000rpm and hold that until about 5500rpm then taper down to 15 by 6000rpm. Then review the logged data. If there's no knock, AFR seem to be in a safe range & absolute load isn't over about 200% anywhere then proceed to dial up the boost after 3500rpm. Just for reference with my current tune on the BNR stage 3 i hit 15psi at 3300rpm and taper up to 19psi at 6000rpm before the throttle plate starts to close up.
Have a look through the thread below and see how this guys car goes. He starts posting data logs on post #286 and on that one he holds 19psi to 6700rpm
ATP 3071r swap how to , lenny gets BT fever too - Page 8 - Mazdaspeed Forums
Also i think you'll have fuel pressure problems and need to upgrade your pump when you start going over 18psi with that turbo but thats just what i think
Good luck mate
Good hard or go home.
Ditch the foam filter and get a paper (K&N) pod
Fit it, let it run it's own boost levels (factory set levels) and have it retuned by Tunehouse.
Get a fuel pump upgrade if you decide to run more than 18psi.
boost levels on the factory setting could be anything depending on waste gate actuator spring and boost source restrictor hole size if using the standard bleed mode setup. So you'll have to play with it a bit first otherwise boost might just shoot up uncontrollably
heh thanks for the info man, i'll be sure to get one of them pod's once the TIP is ready ;)Quote:
Originally Posted by 2XS
Watch your power its not so much your boost, if u have a lot of bolt ons you will have more power. most important no big boost under 3500rpm, and non over 6000rpm esp with 3071. Use the boost idea given as a guide to power progression....
Ahh ok, well i guess ill just advise jim @ tunehouse about these limitations and hopefully i can get a nice tune , i think i might stick to 19PSI max until i decide to do forged internals ... or until the block blows lolQuote:
Originally Posted by luke 3mps
If you dont have a dashhawk or simular would be a good idea to get one ;). Help you monitor everything
I have a spare block ready when you are :pQuote:
Originally Posted by rayd
LOL @ Troy.. u want everyone to borrow/exchange ur block im starting to think its a dud :pQuote:
Originally Posted by 2XS
I don't need it anymore. I don't own an MPS. :2thumb:Quote:
Originally Posted by luke 3mps
Sharing's care'n:2thumb:Quote:
Originally Posted by 2XS
Is your exhaust manifold stock ray? It will be interesting results on how turbo reacts, Jim is you man ;)
What is the stock boost control though the rpm?
I think HPF in Melbourne do a safe tune of around 17psi throughout?
Hey mitchQuote:
Originally Posted by MPS2NV
Yer mani is still stock , I think the stock mani is pretty good , I can only flaw it with that springy thing in the middle... Not too bad hehe
The stock manifold is a POS. It has the flex joint in the middle.Quote:
Originally Posted by rayd
It has a valve style "flap" to separate the gasses from cylinder 1 and 2, which restricts flow at any sort of RPM (higher in the revs) Did you look at the colour difference from cylinders 1and 2 to the colour of 3 and 4. The dry side (1 and 2) means that it has been hotter than the gloss side (3 and 4) which means the flap has been restricting flow causing heat buildup.
Flap is "flapping and you can see the colour difference in the Youtube clip.
I would suggest a better manifold as soon as funds permit.
very interesting troy...
I'll actually answer your original question.
Use the e-Boost2 from Turbosmart
Adjustable Boost Levels: program boost against TIME or RPM.
Interesting indeed, ill have to suss out various options ... Thanks for the advise Troy.Quote:
Originally Posted by 2XS
Yer I looked at that actually, but found it too expensive, ended up getting the Perrin ebcs pro, hopefully works well :)Quote:
Originally Posted by Crusher_13