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Mafless vs hitachi, vs oem maf

 
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Old 09-30-2015, 05:31 PM
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Mafless vs hitachi, vs oem maf

Ok I'm looking for knowledge and advice on the subject. I take to Markski a little and he said stay oem, that all I have so far but here where I'm going.

My 01 is getting a work over this winter.
Wavetrac diff (rwd conversion already done)
Erp triple Carson clutch (already have)
Fix coolant pipe issue
2nd fuel pump and injectors
Billet 18 or 20g size turbos (I will build myself)
IPD manifold
Intercoolers and piping (already have)
Billet diverter valves (already have)

So now it dome down to tuning and how to do the intakes. I have a Cobb accesport already and will be using that as the interface to tune with. I have a good tuner and dyno locally who is a friend of mine.

Truthfully I'd like to run filter in the intake inlets but it's not the end of the world to run stock style and build larger piping for it. Just looking for the best way to go.

Car is a weekend play toy and may take a long trip in it once or twice a year (like 3k mile trips).
Thanks in advance
 
  #2  
Old 09-30-2015, 06:14 PM
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My understanding is if you are not making 4 digit power and still on k-series turbo no need to go mafless....
 
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Old 09-30-2015, 06:28 PM
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My 18G car uses a stock MAF. My friends 18G car uses a Ford MAF. Both of these cars are tuned by Protomotive. My car was set up with PCA track events in mind. My friends car was set up for mile type events. I would go with what your tuner says will work best with your mods and intended use.
 
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Old 09-30-2015, 06:59 PM
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Problem with that is he is in uncharted territory with this. I think I'm the only 996 turbo in North Dakota, Atleast that I know off. I've never seen another. 2 or 3 997tt and 3 that i know off 991tt but no 996
Originally Posted by Gunther View Post
My 18G car uses a stock MAF. My friends 18G car uses a Ford MAF. Both of these cars are tuned by Protomotive. My car was set up with PCA track events in mind. My friends car was set up for mile type events. I would go with what your tuner says will work best with your mods and intended use.
 
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Old 09-30-2015, 07:03 PM
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I'm just worried about all the oem Maf failure I've been reading about and then the direct to go with the intakes
 
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Old 09-30-2015, 07:29 PM
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Originally Posted by flewis763 View Post
I'm just worried about all the oem Maf failure I've been reading about and then the direct to go with the intakes
I have a built high rpm 3.8 race engine and have never had any issues with the OEM Maf / air box / filter. I have a RUF high volume intake manifold (post Maf) along with large 70mm turbo intake pipes. Y-pipe, throttle body, and intake plenum are OEM. Engine redlines at 7500 and sees those rpms at almost every shift. WHP is 600 and torque is 670 ft.lb at 4000rpm. No Maf issues whatsoever. It would seem to me that blown Mafs are directly related to lousy tunes in combination with questionable hardware. You won't have any issues with a good tune.
 

Last edited by pwdrhound; 09-30-2015 at 07:41 PM.
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Old 09-30-2015, 07:48 PM
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Originally Posted by flewis763 View Post
I'm just worried about all the oem Maf failure I've been reading about and then the direct to go with the intakes
I have had my car for 13 years and have replaced 1 MAF. Car has been tuned for 10 of those years.

Like Powder said get a good tune and it will not be a problem.
 
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Old 10-01-2015, 06:05 AM
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Ok thanks guys, that makes me feel a little better. Eventually if I keep the 096 and don't upgrade to a 996 I will build the motor and switch to pro efi and run e85 with twin efr 7163 turbos but that is probably 2 years away.
 
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Old 10-01-2015, 12:27 PM
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I have the proEFI 112, yada, yada. I'd say don't mess with the factory air intake and MAF....yet. Once you go proEFI...then you should. But for what it's worth, just a lot more work for probably not a lot more gain. Especially since the COBB is a very capable tuning platform. What size injectors are you going with?
 
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Old 10-01-2015, 01:06 PM
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Originally Posted by Gunther View Post
I would go with what your tuner says will work best with your mods and intended use.
This.
 
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Old 10-02-2015, 06:52 AM
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Originally Posted by 03EvoIII View Post
I have the proEFI 112, yada, yada. I'd say don't mess with the factory air intake and MAF....yet. Once you go proEFI...then you should. But for what it's worth, just a lot more work for probably not a lot more gain. Especially since the COBB is a very capable tuning platform. What size injectors are you going with?
Probably going to go with 1000 or 1300cc injectors. E85 is very easy to get and after reading up on the fuel system, I can easily switch to running a walbo 450 in tank and have enough to run them. Kinda wants to do as much possible with only pulling the engine once until I do a rebuild on it.
Add a fpr and rails as well. At least that is my thought as of now.
I have run the 450 pump up to 750whp in three past so should be plenty on three stock motor.
 
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Old 10-02-2015, 04:08 PM
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Originally Posted by Gunther View Post
My 18G car uses a stock MAF. My friends 18G car uses a Ford MAF. Both of these cars are tuned by Protomotive. My car was set up with PCA track events in mind. My friends car was set up for mile type events. I would go with what your tuner says will work best with your mods and intended use.
Tuning is important and the maf will last... also stay away from certain air boxes...
 
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Old 10-02-2015, 04:45 PM
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Originally Posted by flewis763 View Post
Probably going to go with 1000 or 1300cc injectors. E85 is very easy to get and after reading up on the fuel system, I can easily switch to running a walbo 450 in tank and have enough to run them. Kinda wants to do as much possible with only pulling the engine once until I do a rebuild on it.
Add a fpr and rails as well. At least that is my thought as of now.
I have run the 450 pump up to 750whp in three past so should be plenty on three stock motor.
1000cc is a waste of time. if your going to build big then run 1400cc fid injectors
if you plan on a proefi build down the road i wouldn't hate my time on anything now. run the car the way to is enjoy it and save for the main build 2 yrs from now. it will save you big $$ in the end
 
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Old 10-02-2015, 05:08 PM
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Originally Posted by 32krazy! View Post
1000cc is a waste of time. if your going to build big then run 1400cc fid injectors
if you plan on a proefi build down the road i wouldn't hate my time on anything now. run the car the way to is enjoy it and save for the main build 2 yrs from now. it will save you big $$ in the end
I agree to a point. Thing is the engine and trans is coming out irrelevant to fix the coolant pipe issue. Also get an lsd in the trans and put in my Erp triple carbon clutch. I can built the fuel system with the injectors for about 1000 bucks. That's fairly cheap for 100 ish whp. Turbos i can build for about 800. That's the way I look at it. I can have more fun with the car for a new years and then when I spend 20k to build everything I'll have to add more to the fuel system anyway.
Idk that's just how I look at it.
 

Last edited by flewis763; 10-02-2015 at 05:12 PM.
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Old 10-03-2015, 11:06 AM
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Actually, once you change the fuel rails out for the SRM units for example with fuel lines, etc, it will make the next fuel injector upgrade WAY easier. The only reason I am not running the 1400's is because I had a defect with them and had the FIC1100's sitting on the shelf as well...so I just threw those suckers in for now. For 600whp on e85, the 1100's should be fine. 650-700 rwhp and you might start to max them out according to the fuel calculations I've done/seen. Not worth risking it though I guess but still it's an easy switch once you go with the aftermarket fuel system.
 

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