Another horsepower estimation, what yas think?

G

gotboostsc

SCCoA Member
Well Guys the last time I was at the dyno I pulled 252 horsepower and 354 ft. lbs of torque with the below mods:

Predator Cam (similar to Xtreme energy 2)
Performance Valve springs
10 % Overdrive
Underdrives
3 inch CAI from SCP
76 MM Maf
gasket match porting on the intake
Flow master exhaust without any cats
SCT Chip

I wasnt really happy with the numbers so I added these new items:

Magnum Powers 2 Ported Blower
Magnum Powers inlet plenum
3.5 inch CAI
Raised Top
Custom Frount Mount intercooler

so what do you all think I will have now? As soon as My intercooler pipes are done being welded im taking it to the dyno but until then, what do yas think?
 
I don't expect you to gain much unless you overdrive it a little more. Then again with stock heads, you may already be overdriving it enough and without better flowing heads the MPII won't help much.

I gained 50 rwhp when switching from a ported early model blower and plenum to an MPII and MP plenum...but I had ported heads, FMIC and a bunch of other stuff...(blower limited). I was overdriving mine about 23%.

David
 
Going from a stock early blower to a MPII blower with stock long block,
for me the RWHP gain was 29.7. (sp)deoblow chip 10% overdrive.

going from a MPII to a MPIII, with coated rotors, & adding MP FMIC ,
with stock long block.
I gain around 6 rwhp. with SCT chip. 20% over drive.


Randy
 
Randy N Connie said:
Going from a stock early blower to a MPII blower with stock long block,
for me the RWHP gain was 29.7. (sp)deoblow chip 10% overdrive.

going from a MPII to a MPIII, with coated rotors, & adding MP FMIC ,
with stock long block.
I gain around 6 rwhp. with SCT chip. 20% over drive.


Randy
Click to expand...

did either of these setups have head-work done to them?
If so; what was done?
 
No head work.Same springs,valves that came from the factory.
With the MPII I MADE 250.0 RWHP, 10% OD

Same with the MPIII with added MP FMIC underdrive pullies,
20% overdrive, no head porting,different chip.
Gain was around 6 rwhp SEAPING HEAD GASKET

Since my last dyno pull RWHP is much higher after Dave D.
retuned my car,the next day. The tune was done with data
down load from Innovate LM2. so I do not know the exact RWHP.
My seat of pants dyno says 273.7 RWHP.
I did make this number during A couple pulls before
the end of the last dyno tune.

I since have changed my head gaskets and did a 5 angle ex
and a 7 angle on intake valve seat cut. So its possible that
I could be around the 275 RWHP mark.

So it has been my experiance early style to MPII BLOWER.
A person could expect around a 25 to 30 RWHP gain.

Same with the MPIII 25 to 30 RWHP Gain over MPII
with stock motor. Or a 50 to 60 RWHP over a stock
early style blower.this would include the installation of the MP FMIC.

A FMIC doe's no good on a dyno while being tuned.
As far as RWHP numbers.They do add power while
going down the road though.

With a built motor,The RWHP gains, I would think should
be higher.

Next I plan to install a 1.6 A/R blower. I have read were
others have pulled 325RWHP. So it looks like its possible
from reading here on line. that a A/R BLOWER on a stock
long block would gain around 105 RWHP over an early style
M 90 blower.

So here is the skinny ball park figuars on my experiance of
gains over the stock early style blower, on a stock long block.
And claims I have read from others gains with the A/R

Stock early style blower starting point 220.0 RWHP.
MPII 25 to 30 RWHP.
MPIII OR MPX 50 TO 65 RWHP
1.6 Auto rotor blower 105 RWHP



Randy
 
Last edited:
gotboostsc said:
The Fmic will produce colder temps so I can advance my timing, which will result in more horsepower on the dyno.
Click to expand...
We all understand the theory behind a fmic, but on a dyno, you won't be able to move enough air to take advantage of the bigger heat exchanger. But like Randy said, the fmic will help you at the track (moreso than at the dyno).
 
Randy N Connie said:
Going from a stock early blower to a MPII blower with stock long block,
for me the RWHP gain was 29.7. (sp)deoblow chip 10% overdrive.

going from a MPII to a MPIII, with coated rotors, & adding MP FMIC ,
with stock long block.
I gain around 6 rwhp. with SCT chip. 20% over drive.


Randy
Click to expand...

Randy, that seems like a lot of work for 35 rwhp. I sure hope the AR install yields you a lot more. Good luck.
 
RadiumSC said:
Randy, that seems like a lot of work for 35 rwhp. I sure hope the AR install yields you a lot more. Good luck.
Click to expand...

If you reread all my posts. you will see a difference.
We had problems with tuning because my head on the
drivers side was lifting during some pulls at high boost.
Not the blowers falt or tuners fault. but a head lifting
and then sealing again after pull.

Hope this make things clear,I am not posting anymore on
this post.I am not going to get in the middle of any
this blower do's that, that blower do's this post.
That happins often around here in the past..

I listed my very unbias results from blower swaps!!
I have dyno sheets that I am not going to post
to back up my post.except for a A/R blower.
I will have that somday.

Thanks Randy
 
Last edited:
Well after the dyno, I did indeed need bigger fuel pump and injectors, so i upgraded to 255 lph fuel pump and 42 lb injectors and I dynoed:
330 horsepower
380 ft lbs of torque
on a mustang dyno.

I still have the stock heads and actually we are using 85% duty cycle on the injectors, so I actually need bigger injectors.
 
gotboostsc said:
Well after the dyno, I did indeed need bigger fuel pump and injectors, so i upgraded to 255 lph fuel pump and 42 lb injectors and I dynoed:
330 horsepower
380 ft lbs of torque
on a mustang dyno.

I still have the stock heads and actually we are using 85% duty cycle on the injectors, so I actually need bigger injectors.
Click to expand...

Wow....that's more power than a lot of the Coy Miller stage II motors are making. I don't think I've ever seen a car with stock heads make that much power with an M90 based blower...Congrats !

David
 
gotboostsc said:
Well after the dyno, I did indeed need bigger fuel pump and injectors, so i upgraded to 255 lph fuel pump and 42 lb injectors and I dynoed:
330 horsepower
380 ft lbs of torque
on a mustang dyno.

I still have the stock heads and actually we are using 85% duty cycle on the injectors, so I actually need bigger injectors.
Click to expand...

I think you would have a sudden 50hp loss if you went to another dyno.
 
Because it's ~~~~~~~~. When you have been around these cars long enough it is easy to tell when something is obviously wrong when comparing HP to modifications. Judging by your modifications list and the dyno numbers you achieved we can see that the dyno is calibrated with a 'happy' correction factor. To prove this theory you should go to a different dyno shop in town.
 
You must log in or register to reply here.
Back
Top