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Old Sep 9, 2009 | 10:24 AM
  #31  
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Originally Posted by drewmob,Sep 9 2009, 02:22 PM
I'm happy for this information but the prospect of running lean made my heart sink. I have a intake/header and was planning on installing my 70mm Greddy single & TP tomorrow. I've been holding off engine management until I ordered a SC. Suffice to say that I'm concerned now.

I have read that 00-01 models run rich in comparison to the 02-03 models, thus the reason for swapping to the later-model ap1 ecu. Should I be worried about running lean as well or is this mainly an issue for DBW guys?

Thanks & /threadjack.
It is worse as the model years progress since the factory tune was improved every few years. However, I've seen AFR charts of even early AP1s running lean.

I wouldn't risk it. Just wait until you get a SC to put the test pipe in.
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Old Sep 9, 2009 | 10:37 AM
  #32  
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I think people dont give the EMU the credit that it deserves, honnestly for the price and retaining OBD2 i think its a great tunning unit.
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Old Sep 9, 2009 | 10:37 AM
  #33  
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Originally Posted by jari8378,Sep 9 2009, 02:37 PM
I think people dont give the EMU the credit that it deserves, honnestly for the price and retaining OBD2 i think its a great tunning unit.
I agree; the difficult part is finding someone to tune it.
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Old Sep 9, 2009 | 10:38 AM
  #34  
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Originally Posted by drewmob,Sep 9 2009, 10:22 AM
I'm happy for this information but the prospect of running lean made my heart sink. I have a intake/header and was planning on installing my 70mm Greddy single & TP tomorrow. I've been holding off engine management until I ordered a SC. Suffice to say that I'm concerned now.

I have read that 00-01 models run rich in comparison to the 02-03 models, thus the reason for swapping to the later-model ap1 ecu. Should I be worried about running lean as well or is this mainly an issue for DBW guys?

Thanks & /threadjack.
if you put all that in w/out tuning you will be running lean. probably around 14.5 or so given you're an ap1 and there is some richness to play with.

you could install the parts but i wouldn't go out and romp and stomp your car through the streets until tuned. just my personal advice.

like i said, if you install all those parts and drive to the store, it's not going to make your engine explode. but it's not the best idea for longevity and reliability.
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Old Sep 9, 2009 | 10:57 AM
  #35  
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I haven't heard any information on this particular item in a while, but perhaps you could look in to a Ballistic Motor Sports Ultimate E-Manage.
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Old Sep 9, 2009 | 11:01 AM
  #36  
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Originally Posted by theRING,Sep 9 2009, 12:33 AM
i agree. All 3 of my previous cars (turbo and NA) that have had to be tuned have been set in the range of 12.8-13.2 and have made decent power. I think this is the range for making power and reliability still being there.

Knowing that the S doesnt have a air flow mon. I went ahead and got a VAFC for a tune.
that 12.8-13.2 afr might be good for NA but that is a really lean afr for a turbo car running pump gas. I'm not sure on a turbo car on pump I'd push it much past 12.0 afr.
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Old Sep 9, 2009 | 11:01 AM
  #37  
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Originally Posted by Terror,Sep 9 2009, 02:57 PM
I haven't heard any information on this particular item in a while, but perhaps you could look in to a Ballistic Motor Sports Ultimate E-Manage.
My brother ran the Ballistic/Holyroller "Chrome" plug and play unit for a while, and eventually upgraded to their Black edition.

It's actually perfect for any combination of bolt ons. It's likely a better tune with its multiple settings than a custom tune you would get from most of the tuners who do not know how to tune the unit.

http://www.holyrollerdyno.com/Holyroller_D...s/Products.html


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Old Sep 9, 2009 | 11:02 AM
  #38  
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Originally Posted by Hero,Sep 9 2009, 10:38 AM
if you put all that in w/out tuning you will be running lean. probably around 14.5 or so given you're an ap1 and there is some richness to play with.

you could install the parts but i wouldn't go out and romp and stomp your car through the streets until tuned. just my personal advice.

like i said, if you install all those parts and drive to the store, it's not going to make your engine explode. but it's not the best idea for longevity and reliability.
I think I'll take both of your advice and hold off on the TP for a bit. Thanks.
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Old Sep 9, 2009 | 11:03 AM
  #39  
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true...if you don't have anyone capable around you to tune the em-u, ballistic is a good choice.
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Old Sep 9, 2009 | 11:14 AM
  #40  
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Honestly the best way to go about it is to dyno your car after and check your AF ratio. I have a FIPK, 70r Sparrow, and test pipe; but my car is running very lean. So In my case I'm most likely getting an ecu and a tune.
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