Best FI for touring?

[Pentalab]

The Eaton M122 1.9 S/C was also fitted as original equipment to supercharged 2007-09 Shelby GT500 5.4v models which also retain the OEM TB and are also fully compatible with any aftermarket CAI designed to fit an Eaton Roots style or Whipple twin screw S/C. The point is, both the Eaton and Whipple designs are also positive displacement S/C's which are in fact, also very compatible with any aftermarket CAI as well. At any rate, also to my knowledge, the Saleen series VI S/C as you also brought up, is indeed the only PD design that does in fact retain the OEM TB for the 4.6L 3V models.

M122 = 2.0 L blower displacement...( 61 ci per L). The 07-09 shelby GT-500's all used a twin 60mm TB (FRPP sold a twin 65mm tb that drops right in).

The 05-10 GT cars with the 4.6L eng all got the twin 55mm tb. ( FRPP sold a twin 62mm TB). 05-10 GT cars with roush M90 / TVS-2300 PD blowers all used the oem twin 55mm TB. I replaced my twin 55mm with the twin 62mm...drops right in.

 

[Mustang Mark]

Department of Boost or whipple are your best bet.
I had a vortech setup that I sold to go department of boost.

The power was meh until you hit 3800ish rpm with the vortech. With the DOB kit it’s all the boost all the time.

 

[Pentalab]

Department of Boost or whipple are your best bet.
I had a vortech setup that I sold to go department of boost.

The power was meh until you hit 3800ish rpm with the vortech. With the DOB kit it’s all the boost all the time.

Instant boost with any PD blower setup....even at idle, at a red light, on my 2010 auto. Bam, instant tq hit. With an auto, it's good for a laff, esp with the oem 1.5 krpm tq converter. Tool around town at 30 mph in 4th gear, mash the gas, instant boost..and simultaneously the auto tranny drops down into 2nd gear..then hold on for the ride. 30-100 mph comes awfully damned quick.

 

[Enfield]

It's pretty clear that PD is what I need. The budget dictates used, so there's this: what kind of vendor support is there for one to install and maintain a used S/C? For instance, in discussion with a Roush support tech I was told that they have very little M90 parts inventory on hand and are not replacing it. He suggested I go with a 2300cc unit. Consensus seems to be that M90 [1500cc] will provide enough boost to get 450 [brake?] hp from my stock-block 4.6 safely. I know that "safely" means that cooling [DOB] and tuning [not canned BAMA] need to be matched to the whole system. Further, while it seems that the oem throttle body can provide 450 hp, can the rest of the stock fuel system keep up at that power?
Finally, can I feed and care for an M90 system with parts from sources other than Roush? How much newer/bigger an S/C do I need to get if M90 is just too obsolete?

 

[Badd GT]

It's pretty clear that PD is what I need. The budget dictates used, so there's this: what kind of vendor support is there for one to install and maintain a used S/C? For instance, in discussion with a Roush support tech I was told that they have very little M90 parts inventory on hand and are not replacing it. He suggested I go with a 2300cc unit. Consensus seems to be that M90 [1500cc] will provide enough boost to get 450 [brake?] hp from my stock-block 4.6 safely. I know that "safely" means that cooling [DOB] and tuning [not canned BAMA] need to be matched to the whole system. Further, while it seems that the oem throttle body can provide 450 hp, can the rest of the stock fuel system keep up at that power?
Finally, can I feed and care for an M90 system with parts from sources other than Roush? How much newer/bigger an S/C do I need to get if M90 is just too obsolete?

https://www.departmentofboost.com/tech/

spend some time at departmentofboost.com, specifically 3v tech, all your questions will be answered

 

[06 T-RED S/C GT]

M122 = 2.0 L blower displacement...( 61 ci per L). The 07-09 shelby GT-500's all used a twin 60mm TB (FRPP sold a twin 65mm tb that drops right in).

The 05-10 GT cars with the 4.6L eng all got the twin 55mm tb. ( FRPP sold a twin 62mm TB). 05-10 GT cars with roush M90 / TVS-2300 PD blowers all used the oem twin 55mm TB. I replaced my twin 55mm with the twin 62mm...drops right in.

Just to clarify, when I mentioned in the previous post about the stock TB being retained for the 2007-09 Shelby GT500, I was actually referring to the OEM Ford 60mm TB. Needless to say, I should had been more specific lol. Meanwhile, thanks for confirming that 05-10 GT cars with Roush M90/TVS-2300 PD blowers all used the Ford OEM twin 55mm TB. Also want to thank 07 Boss for confirming the Whipple PD blowers also retained the OEM twin 55mm TB for the 05-10 GT cars as well.

 

[Dino Dino Bambino]

A PD blower specific to an '05-'10 GT would perform better with a larger 62mm TB so while you may be able to retain the stock twin 55mm unit, would you want to? A used GT500 twin 60mm TB would be a cheap upgrade if you could find the necessary adapter to make it work. Then again if you take the DOB GT450 route, you could find a used GT500 supercharger head unit with 60mm TB and save a few $$$.

https://www.departmentofboost.com/product/450-450hp/

https://www.departmentofboost.com/tech/#3v-tech

 

[06 T-RED S/C GT]

As you just pointed out, it would be a cheap upgrade IF you could find the necessary adapter to make it work? Otherwise, you would have to take the DOB GT450 route. The stock 55mm twin TB is capable of handling up to 450RWHP. Anything above that, you're beyond the safety limits of the stock 3v internals anyhow. That being said, there's obviously a very good reason the Roush M90/TVS-2300 and Whipple PD blowers including the Saleen series VI all retain the OEM 55mm TB for the 2005-10 GT models.

 

[Enfield]

https://www.departmentofboost.com/tech/#3v-tech

Good stuff!

 

[DieHarder]

If you're a do it yourselfer the easiest, least expensive, best availability of parts is a stock M122; GT500 TB, CAI and DOB manifold. Having installed one I found it very straight forward and worked perfectly. Just take your time, be organized, follow directions and watch the small parts. Upgrades are easy. Highly recommend getting a bigger heat exchanger from the get go and have Lito tune it. You'll be glad you did.

 

[Enfield]

Have written to DOB asking for help getting just that combination together. There are some GT500 bits for sale on the FB site now, but it seems more prudent to get a blower from DOB if possible. This car is not a daily; it sits in a heated shop with all the needed tools. These days, the daily only gets driven about twice a week!

 

[eighty6gt]

FYI, I had an M90 and now have a TVS 1.9. The M90 had a lot more immediate power delivery with a similar drive ratio. I kind of miss that little guy at times!

IE: M122 is a both a bargain and works great on the street if you are not obsessed with RWHP or IAT #'s. The DOB should handle IAT's a lot better than my M90 manifold and 2013 GT350 front radiator/intercooler pump. Also depends on where you live and how many days it's 90F++. Where I'm from it's usually cool.

 

[Sactown]

I still have the Saleen series VI S/C on my car. it makes 420 to the tires with 3.6" pulley, OEM fuel pump, stock throttle body/Saleen 98mm airbox and JDM 91 S/C tune. Just as you mentioned, the car has been very reliable and provides tons of fun for street driving. My only downfalls are the stock heat exchanger which isn't quite efficient enough when it comes to minimizing heat soak, the location of the oil drain plug and loud gear noises from inside the enclosure when at idle. But other than that, I've been very pleased with it's reliability and overall performance.

You're right about the HE, but nothing a larger HE and a larger res can't fix

 

[Pentalab]

A PD blower specific to an '05-'10 GT would perform better with a larger 62mm TB so while you may be able to retain the stock twin 55mm unit, would you want to? A used GT500 twin 60mm TB would be a cheap upgrade if you could find the necessary adapter to make it work. Then again if you take the DOB GT450 route, you could find a used GT500 supercharger head unit with 60mm TB and save a few $$$.

https://www.departmentofboost.com/product/450-450hp/

https://www.departmentofboost.com/tech/#3v-tech

60/55 = 1.0909 (1.0909 x 1.0909) = 1.19 That's a 19% increase in cross sectional surface area.
62/55 = 27% increase in cross sectional surface area.

65/60 = 17.36% increase in cross sectional surface area.
67/60 = 24.69% increase in cross sectional surface area.

The FRPP twin 62mm and also twin 65mm TB's are polished..and both are expensive items.
VMP makes their own twin 67mm (polished), that uses the same gears etc, as the FRPP twin 65mm...and a lot cheaper.

On a side note, Justin at VMP managed to get 650 rwhp out of a GT-500, years ago, using the oem twin 60mm TB. The bottle neck was not the TB, it was the elbow. Hence the VMP blowers came with high flow elbows, then the bigger TB's actually started to work better. Later production VMP blower's have no elbow. The elbow and blower casing are all one unit...and both are high flow.

 

[Pentalab]

FYI, I had an M90 and now have a TVS 1.9. The M90 had a lot more immediate power delivery with a similar drive ratio. I kind of miss that little guy at times!

IE: M122 is a both a bargain and works great on the street if you are not obsessed with RWHP or IAT #'s. The DOB should handle IAT's a lot better than my M90 manifold and 2013 GT350 front radiator/intercooler pump. Also depends on where you live and how many days it's 90F++. Where I'm from it's usually cool.

Did u have the oem 73mm pulley on the M90...(with aprx 5psi boost)...or the smaller 2.55/2.57/2.49" pulley ? ( aprx 7-8 psi boost). What pulley and how much boost do you have on the TVS 1.9 ?

 

[Enfield]

It does hit the 90's around here about 10-15 days/year, but the bigger concern is what happens within the system after all components are heat-soaked at cruising speed. Almost no urban driving is contemplated, but extended higher speeds at relatively higher elevation are planned.

Can M122 bolt up to the Roush M90 manifold? And can that manifold/IC cool the input adequately with bigger HE/pump/res? Not looking for much more than about 450 reliable HP.

 

[eighty6gt]

The only reason I can use an M90 manifold with a 1.9 is justin @vmp had the hair brained idea to make a blower to fit old roush 427R cars, as an upgrade. I bought my M90 kit used for cheap, I paid retail for the 1.9 from PENTALAB.

The M122 and DOB manifold will do exactly what you want to do, same weather here. Cruising = ideal operation. I only ever see weird things if I rot in traffic at high temps, as soon as I start rolling the car cools off. It's not even bad, just feels a little soft off of the bottom launching when I am at ... 160-170F indicated intake temps. I'm sure this is not accurate as the sensor heat soaks. The blower and intake flood with cooler outside air once you open the throttle. I can see all this happening as I have an IAT gauge on my dashboard via eec 5.

Lito will tune your car so that it's safe during all circumstances.

 

[06 T-RED S/C GT]

You're right about the HE, but nothing a larger HE and a larger res can't fix

Very good point indeed about adding a larger HE and larger res resolving the heat soak issues. Other than that, I have only one other concern that I forgot to mention in the previous post. Anyhow, I just recently came across DOB's website which addresses the cooling disadvantages of having to relocate and reverse the direction of the alternator that Saleen requires for installing the series VI supercharger kit. At any rate, I went ahead and re-posted the alternator/cooling issue descriptions from the DOB website below.


Because the Saleen has the supercharger down in the valley of the motor, the alternator has to be moved from its stock location. Saleen supplies the parts needed to do this, but it’s not ideal. Saleen has you spinning the alternator backward. This isn’t a problem as far as volt/amp production. But it does cause the alternator’s cooling to suffer because the fans are spinning backward and the alternator itself is backward so whatever air is moving through it is fighting the air coming through the radiator. The stock alternator is already problematic (it fails a lot). Adding more heat and reverse rotation to the alternator isn’t a fantastic idea. Also, the location it’s mounted in makes it much harder to screw with stuff on the front of the motor, change belts, etc.

 

[eighty6gt]

larger HE and reservoir will not solve heat soak issues. The aluminum intake and blower get to 200F. I run a stock 2013 GT500 degas bottle and it is on a "bypass branch" that is restricted on the inlet and runs out, up, in and out of the bottle and then back down to my 2013 GT500 intercooler pump located ahead of the driver's front tire. This way the line from the intercooler rad return has a straight shot to the pump inlet, and any gas gets up and out of the circuit into the degas/fill bottle. Larger reservoirs are great for adding weight and making it take longer for the system to cool back down once you're rolling.

I wouldn't run the alt backwards because I would be spending too much money on sleep aids and anti anxiety medication, and grease to smear on my glasses when I had to look at it.

 

[dark steed]

FYI: the annual DOB group buy just kicked off


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