Roush Dyno Results: '05 w/Vortech & Info. for Those Upgrading

[wsbrigham]

I just finished a round of dyno testing & tuning after I installed the Vortech V2 S-Trim on the S281 N/A. I'll post the dyno graph as soon as I receive it through the e-mail. In the mean time here is a summary:

Stock '05 S281-N/A
Vortech V2 S-Trim
39# Injectors
Flowmaster Super 40 Mufflers
SCT XCal II Programmer

RESULTS:
465 rwhp
407 rwtq
7 lbs. boost
Stock focus fuel pump was at 96% capacity (almost maxed)
Stock fuel rails were at 95% capacity (almost maxed)
Stock MAF Sensor was at 4.4 volts (not near pegged)
Timing was at +20
A/F was at 11.5:1

SUMMARY:
For those thinking of upgrading to the Vortech can do so w/o upgrading the stock MAF, stock fuel rails, or fuel pump. If the Hp goals exceed what I have achieved, the fuel rails and pump must be upgraded. I can achieve substantially more Hp, but only after a fuel system upgrade. The upgrade will take a few weeks.

FINAL NOTE;
Man! The car really cooks! The guy who did my tuning car me a power curve similar to a positive displacement blower and not the typical power curve associated with a centrifugal blower - max power comes on early (like a roots/twin screw) and pulls through redline (like a typical centrifugal).

 

[00s281sc368]

Good info and good numbers

 

[Head Paneer]

Congratulations.


So what are you going to do about the fuel rails? Are there any setups for a returnless system?

 

[wsbrigham]

Congratulations.


So what are you going to do about the fuel rails? Are there any setups for a returnless system?

Thanks!

I haven't been looking to install a returnless system to this point so I am not aware of what is available. I have a KB BAP on the way and I'm ordering a Ford GT fuel pump today and haven't decided on rails yet.

Is anyone aware of a good end-to-end fule system that would support up to around 600rwhp?

Thanks for the input!

 

[almostblown]

How many lph does the GT pump flow at?

 

[saleenster]

Thanks!

I haven't been looking to install a returnless system to this point so I am not aware of what is available. I have a KB BAP on the way and I'm ordering a Ford GT fuel pump today and haven't decided on rails yet.

Is anyone aware of a good end-to-end fule system that would support up to around 600rwhp?

Thanks for the input!

Wow, that must be a great tune. You seem to have gotten almost 200 rwhp out of 7 lbs of boost. I know the 3 valve is awesome, but there has to be more in your tune or other mods. I am seeing 05~06 cars putting 260~276 rwhp right out of the box on a dynojet. The boost gods claim on most circumstances that for 1 lb of boost you should see 10~15 rwhp if you have a good flowing exhast system. My first thought is your 39 lb injectors would have a hard time maintaining that hp. What type of dyno did you use, Dynojet, Mustang dyno, etc? Any before (S-trim) and after numbers by chance? If I seem to be down playing your numbers please dont take offence, as I am just trying to understand your rwhp numbers with that fuel system.Your fuel pump and rails I agree with.

 

[wsbrigham]

Wow, that must be a great tune. You seem to have gotten almost 200 rwhp out of 7 lbs of boost. I know the 3 valve is awesome, but there has to be more in your tune or other mods. I am seeing 05~06 cars putting 260~276 rwhp right out of the box on a dynojet. The boost gods claim on most circumstances that for 1 lb of boost you should see 10~15 rwhp if you have a good flowing exhast system. My first thought is your 39 lb injectors would have a hard time maintaining that hp. What type of dyno did you use, Dynojet, Mustang dyno, etc? Any before (S-trim) and after numbers by chance? If I seem to be down playing your numbers please dont take offence, as I am just trying to understand your rwhp numbers with that fuel system.Your fuel pump and rails I agree with.

The pulley I installed on the blower is intended to put down 11 lbs./boost at sealevel. The actual /effective boost we are seeing at our altitude varies between 7 & 8 Lbs.
The guy that tuned my car is a highly reputable guy in the southwest (Ryan at SpeedDreams in ALbuquerque, NM)). He has actually helped R&D the SCT stuff. He was also suprised at the number we put down. He had installed a Vortech V2 S-Trim HO (mine is the non-HO)system on another '05 and saw only 430 rwhp (final results after lots of runs was 480 rwhp). When I odered my stuff from the guys at JMS Chip & Performance (Chris Johnson, Monty,etc. - the guys who develop the SCT products) told me to expect around 450 rwhp with what I was receiving. As a matter of fact, the first run on the dyno (we used a DynoJet) yielded us 448 rwhp. I have to say, the guys at JMS really, really know their stuff to be able to estimate power like that.
I agree with you with regards to the injectors handling that HP. I was also concerned about the pump, rails, and injectors before we even bought the package. On several occasions, I call JMS and they reassured me that the stock pump and rails and the 39# injectors could handle the 450 rwhp and they were right. Based on my numbers, I was right at the limit.
Regarding my exhaust ststem, it is pretty free flowing. I have by-passed the center exhaust and now have the exhaust dumping directly to the ground immediately after the Flowmaster Super 40 mufflers I installed last week and all tubing has been upgraded to 3" dia.. The cats on the new '05 Saleen are greatly improved over previous years. There are now only two cats and they are small. I went to a local guy here that builds custom exhausts for alot of the dragracers around here and he advised me no to to waste my money on aftermarket highflow cats because those little cats should be fairly efficient already.

Some bad new, though. My clutch fried and my flywheel exploed last night while racing. I almost ate the wall at approx. 130mph. The stock clutch isn't good for high power outputs.

Can anyone suggest a could aftermarket, high power clutch? (Spec, Centerforce, Mcloud, etc.)

 

[saleenster]

The pulley I installed on the blower is intended to put down 11 lbs./boost at sealevel. The actual /effective boost we are seeing at our altitude varies between 7 & 8 Lbs.
The guy that tuned my car is a highly reputable guy in the southwest (Ryan at SpeedDreams in ALbuquerque, NM)). He has actually helped R&D the SCT stuff. He was also suprised at the number we put down. He had installed a Vortech V2 S-Trim HO (mine is the non-HO)system on another '05 and saw only 430 rwhp (final results after lots of runs was 480 rwhp). When I odered my stuff from the guys at JMS Chip & Performance (Chris Johnson, Monty,etc. - the guys who develop the SCT products) told me to expect around 450 rwhp with what I was receiving. As a matter of fact, the first run on the dyno (we used a DynoJet) yielded us 448 rwhp. I have to say, the guys at JMS really, really know their stuff to be able to estimate power like that.
I agree with you with regards to the injectors handling that HP. I was also concerned about the pump, rails, and injectors before we even bought the package. On several occasions, I call JMS and they reassured me that the stock pump and rails and the 39# injectors could handle the 450 rwhp and they were right. Based on my numbers, I was right at the limit.
Regarding my exhaust ststem, it is pretty free flowing. I have by-passed the center exhaust and now have the exhaust dumping directly to the ground immediately after the Flowmaster Super 40 mufflers I installed last week and all tubing has been upgraded to 3" dia.. The cats on the new '05 Saleen are greatly improved over previous years. There are now only two cats and they are small. I went to a local guy here that builds custom exhausts for alot of the dragracers around here and he advised me no to to waste my money on aftermarket highflow cats because those little cats should be fairly efficient already.

Some bad new, though. My clutch fried and my flywheel exploed last night while racing. I almost ate the wall at approx. 130mph. The stock clutch isn't good for high power outputs.

Can anyone suggest a could aftermarket, high power clutch? (Spec, Centerforce, Mcloud, etc.)

Sorry to hear about your clutch and flywheel, but more importantly your okay. Good info on clearing up my confussion. I tend to forget very easily elevation and the effects it can have. I am guessing your pulley size is 3.12?

On a side note, I have used a centerforce duel friction on my prior supercharged Saleen and was happy with it, till I installed the Spec on my current supercharge Saleen. Both are good, but a Spec stage II or even stage III would work well for your appliaction. The stage III is pretty tight, but if you plan on upgrading your fuel system down the road, the stage III might be your best bet as it appears the horsepower bug has bitten you pretty good

 

[wsbrigham]

Sorry to hear about your clutch and flywheel, but more importantly your okay. Good info on clearing up my confussion. I tend to forget very easily elevation and the effects it can have. I am guessing your pulley size is 3.12?

On a side note, I have used a centerforce duel friction on my prior supercharged Saleen and was happy with it, till I installed the Spec on my current supercharge Saleen. Both are good, but a Spec stage II or even stage III would work well for your appliaction. The stage III is pretty tight, but if you plan on upgrading your fuel system down the road, the stage III might be your best bet as it appears the horsepower bug has bitten you pretty good

My pulley size is 3.5. The pulley that came on the car that was to deliver the 9 lbs. was 3.75 (I think). As far as the internal gearing on the Supercharger, I can't say right now because I just don't know. The internal gearing seems to vary from application to application.
Regarding the clutch, when I went to SpeedDreams this afternoon to get a new clutch order, he mentioned Competitiion Clutch out of Conyers, GA. He stated that he has had beetter luck with their clutches than any others out there. He stated that not once has someone come back and complain about driveability, sounds, or otherwise. I have actually never heard of the company until today. Lookiing through thier website, I don't see one american muscle car featured or mentiond. Rather, I see a bunch of Japanese cars and one Dodge Neon (Team Mopar) drag car. On the other hand, he has installed them on some of the huge horsepower american muscle cars here in town... I'm torn with what to go with. I feel safe and predictable with the Spec Stage II or III. I have never personally experienced the driveability of the Spec Stage III. Do you think it would be reasonably driveable on a daily driver?

Thanks for the advice. Hopefully, I can make-up my mind on a clutch by Monday when I can place an order. Any additional information/help would be greatly appreciated.

 

[lgndracer]

I have a SPEC as well, a Stage II+. Works very well. Takes about 1000 miles to "break" it in and to get rid of the chatter.

Excuse my ingnorance on the 3V's, but did they forge the rods in the new motors? That seems like a lot of power on regular old stock internals.

 

[wsbrigham]

How many lph does the GT pump flow at?

I'm not sure of the rating for that pump, but the GT manages to use a the single pump to handle 450 rwhp. I also know that several '05 guys here are putting out over 500 rwhp using the single GT pump. If I had to guess, it would have to be somewhere around 300 lph or more.

 

[wsbrigham]

I have a SPEC as well, a Stage II+. Works very well. Takes about 1000 miles to "break" it in and to get rid of the chatter.

Excuse my ingnorance on the 3V's, but did they forge the rods in the new motors? That seems like a lot of power on regular old stock internals.

Thanks for the info!! I feel better giong with something that has a proven record. I think I'll be ordering the Spec II or III - still not sure between the two, but atleast I have narrowed it down to the brand.

The internals - I'm not 100% sure, but I believe the rods and crank are not forged. I'm not too terribly concerned at this point if I'm in the sub 10 lbs. boost range. One thing is for sure, time will tell me everything.....

 

[saleenster]

Thanks for the info!! I feel better giong with something that has a proven record. I think I'll be ordering the Spec II or III - still not sure between the two, but atleast I have narrowed it down to the brand.

The internals - I'm not 100% sure, but I believe the rods and crank are not forged. I'm not too terribly concerned at this point if I'm in the sub 10 lbs. boost range. One thing is for sure, time will tell me everything.....

I have only felt the stage III once. My memory is they are quite a bit stiffer vs the stage I and II. I am currently using the stage I, but am getting close to its limits with the new boost I have. I was seeing 10 lbs from my S trim, but last wk, I had a few issues worked out and was told its seeing 12 now. I need to visit the local dyno to see the changes, but that should put me somewhere between 430~450 rwhp. I am probably on limited time with the stage I. Its hard to tell the difference between stage I and II in terms of feel. The Stage II should work decent for you, but if you have any plans down the road for additional power, I would "kill 2 birds with one stone "so to speak, and purchase the stage III.

I have never heard of Competion clutch either. Either way, I bet that puppy pulls really nice through the RPM range. I am a little jealous. Have fun with it