Power Adders And Tuning Questions

kpack5982

Yeah, it was pretty stiff, but eventually a buddy

Jul 13, 2005

325

1

19

Granger, IA

May 10, 2007

#1

• May 10, 2007

• #1

I've been thinking a lot about doing a power adder to my car but was kind of wondering a few things. I searched but I figured this would save me an exhaustive search with no leads or maybe a little heckling. Anyways...

On a turbo car is there still o2 sensors to adjust the fuel, etc. or does something else control the fuel like an fmu or tuner program?

On cars with power adders do most people get rid of the egr, pcv, etc? How does the boost affect the vacuum brakes too, do most people switch to manual?

I was also looking at a twin turbo setup and all the kits seem to come with everything but downpipes? Isn't there a kit or downpipes that could attach to these kits to the h or x pipe already on the car?

Those are just some of the burning questions I have on my mind

 

Bullitt347

I have been doing it wrong this whole time

15 Year Member

Mar 23, 2007

3,960

2,918

194

Middle of Maine

May 10, 2007

#2

• May 10, 2007

• #2

Stock electronics would require the retention of the O2 sensors. If you have a MAF you usually have to retain the PCV. The power adder will not affect the power brakes as you only loose vacuum at WOT and one usually does not use brakes at WOT. If you went with a stand alone engine management system you would not have to have O2 sensors, but you would usually use a Wide Band O2 to dial in your A/F ratio ect. This is just touching the surface of what really goes on with the engine. I would still do as much research as possible for a better understanding of what your getting into. Knowledge is power (also saves money by eliminating mistakes).

 

kpack5982

Yeah, it was pretty stiff, but eventually a buddy

Jul 13, 2005

325

1

19

Granger, IA

May 10, 2007

#3

• May 10, 2007

• #3

thanks for the info what are some examples of fuel management systems, where can you get them and what would be a good deal on a used one?

 

poneypower89

Now everyone in the world will know I wanna bang t

Dec 6, 2004

0

3

28

Indianapolis, Indiana

May 10, 2007

#4

• May 10, 2007

• #4

my brakes work when still in boost

 

kpack5982

Yeah, it was pretty stiff, but eventually a buddy

Jul 13, 2005

325

1

19

Granger, IA

May 10, 2007

#5

• May 10, 2007

• #5

so maybe the brakes and boost question was my retard oversight

 

kpack5982

Yeah, it was pretty stiff, but eventually a buddy

Jul 13, 2005

325

1

19

Granger, IA

May 10, 2007

#6

• May 10, 2007

• #6

Ok so if I put an fmu on the car to increase the flow of say 24 lb injectors, then do the o2s get disconnected or what do you do with the o2s if they are useless. Also if I decided to hook up a wideband at some point for tuning purposes could it be connected into the stock system as well as an air/fuel gauge?

 

91ghp5.0

Active Member

May 25, 2005

42

0

28

Somewhere

May 10, 2007

#7

• May 10, 2007

• #7

FMU's are usually considered a "limp" until you can get larger, more adequate injectors. Some will argue you about it until their blue in the face, but the plain and simple fact is that the proper sized injectors (usually in the 42 lb/hr rate area) with a computer tune (chip or handheld, such as the Anderson PMS) is the safest, and most reliable system.

Wideband uses different sensors, thus the difference between your stock "narrow band" and the new "wide band" 02 sensors.

A stand alone, Like F.A.S.T., or Accel, or even AEM would let you drop things like MAF, etc.

You can tune the stock computer by changing the injectors, getting a matching mass air meter for the injectors, and have a chip "burnt" for the car (or getting a piggy back system, like Tweecer, the Anderson PMS, etc.).

 

poneypower89

Now everyone in the world will know I wanna bang t

Dec 6, 2004

0

3

28

Indianapolis, Indiana

May 11, 2007

#8

• May 11, 2007

• #8

91ghp5.0 said:

FMU's are usually considered a "limp" until you can get larger, more adequate injectors. Some will argue you about it until their blue in the face, but the plain and simple fact is that the proper sized injectors (usually in the 42 lb/hr rate area) with a computer tune (chip or handheld, such as the Anderson PMS) is the safest, and most reliable system.

Click to expand...

haha, I like that one. Considering I've ran my car for 2+ years and over 30,000 miles with stock injectors, an fmu, and pushing 9psi without any problems.

I won't argue that a professional tune isn't the safest route. BUT, I will argue that the FMU isn't just a "limp". Proof is in the pudding man. Come take a ride