AMS tests the New Forced Performance HTA37R!
Off if FP's site
"Our version ditches the "t67" compressor wheel. That wheel was a 63 trim wheel that really left LOTS on the table when it came to high boost performance, giving only a max PR of 3.4:1 even at it's highest speed line of 120krpm. The HTA easily sustains PR in excess of 4.5:1 making 45psi or more boost pressures possible, consistent and dependable. "
Maybe because of the increase in reliable PR and wheel speed another advantage of the HTA is reliability? Also, if the regular 37R is only efficient to 42psi and the HTA is efficient to far past 45psi then maybe comparing these two turbos could because of their characteristics never be an apple to apple comparison? We all know that comparing two turbos at different boost levels is not a very scientific tests...... We also know that you cannot determine how reliable a turbo is by a single dyno pull....
/end thought
"Our version ditches the "t67" compressor wheel. That wheel was a 63 trim wheel that really left LOTS on the table when it came to high boost performance, giving only a max PR of 3.4:1 even at it's highest speed line of 120krpm. The HTA easily sustains PR in excess of 4.5:1 making 45psi or more boost pressures possible, consistent and dependable. "
Maybe because of the increase in reliable PR and wheel speed another advantage of the HTA is reliability? Also, if the regular 37R is only efficient to 42psi and the HTA is efficient to far past 45psi then maybe comparing these two turbos could because of their characteristics never be an apple to apple comparison? We all know that comparing two turbos at different boost levels is not a very scientific tests...... We also know that you cannot determine how reliable a turbo is by a single dyno pull....
/end thought
Makes 2 of us
I would ask how it did on pump gas, but I have seen how Martin tOOn's pump gas.
How you figure? Go to FP's website and look at buschurs dyno's. Maybe I should say more "midrange" than peak but it's right in front of your face. The turbo spooled faster and made more power. Bottom line............. ESPECIALLY putting it up againts this turbo. IMO, I'd still take an HTA 35R over a regular OR an HTA 37 any day. It's been shown to make 750whp. AMS isn't even making that here with 42lbs of boost.
I have a video of it I will be uploading at some point
The car in question previously had a BR 3065 kit and was making 530 on pump and meth with the stock ecu
We added a AEM and the FP gt37HTA on the FP DSM Style cast 02 housing and we lost significant spool and could not make any appreciable gain in power up top with that combination
After speaking with Master Buschur it was concluded that the FP cast 02 housing DSM style is not a good match for the HTA 37 turbo and the customer is electing to stick with his good ole BR3065 for now - hence the turbo for sale
The car in question previously had a BR 3065 kit and was making 530 on pump and meth with the stock ecu
We added a AEM and the FP gt37HTA on the FP DSM Style cast 02 housing and we lost significant spool and could not make any appreciable gain in power up top with that combination
After speaking with Master Buschur it was concluded that the FP cast 02 housing DSM style is not a good match for the HTA 37 turbo and the customer is electing to stick with his good ole BR3065 for now - hence the turbo for sale
Last edited by DynoFlash; Apr 10, 2008 at 09:15 PM.
AMS uses the PT .63 housing because it fits the packaging of their O2 housing/wastegate setup, and so that was the way that this test was set up. The .63 housing has a .63 A/R, whether it "feels" like a .82 or not. That's why its identified as a .63 A/R 
FP recommends the .82 or larger housing, which is different in size and manufacturer than the .63 housing. I'll wait for the test with the .82 housing, before I conclude that the HTA wheel in the 37R is not a significant improvement.
Also, any idea on whether the fuel (Q16) or the cams affected the results?
FP recommends the .82 or larger housing, which is different in size and manufacturer than the .63 housing. I'll wait for the test with the .82 housing, before I conclude that the HTA wheel in the 37R is not a significant improvement.
Also, any idea on whether the fuel (Q16) or the cams affected the results?
Many cars that tested it, there ET and picked up MPH!
The fuel could have made all the power difference if the fuel was changed. I also cant wait to see the next round of testing with back pressure monitoiring. Im wondering if .63 is choking aswell.
NEW! Q16
Q16 will work well in any drag racing or circle track application -- naturally aspirated, nitrous or blowers. Q16 is highly oxygenated, requiring a 4-6% increase in fuel flow, which will make 3-5% more power than competitive 116 octane fuels. Q16's oxygenation will significantly expand the range of air/fuel ratio acceptability, so performance will be more consistent and won't vary as dramatically with altitude or density changes. For bracket racers, variations in ET from run to run will be substantially reduced. This added fuel flow also effectively increases its octane by 6-8 numbers above its standard ASTM octane rating.
• Color: Yellow
• Oxygenated: Yes
• Motor Octane: 116
• Research Octane: 120+
• Specific Gravity: .716 at 60° F
C16
Used in turbocharged engines, blown engines and nitrous applications with CRs up to 17:1. Recommended by the top nitrous oxide companies. Spec Fuel for NHRA Comp Eliminator.
• Color: Blue
• Motor Octane: 117
• Specific gravity: .735 at 60° F
EDIT: went back reread OP and fuel wasnt changed, sorry. Atleast the post showes the descriptions of the fuels off VPs site.
NEW! Q16
Q16 will work well in any drag racing or circle track application -- naturally aspirated, nitrous or blowers. Q16 is highly oxygenated, requiring a 4-6% increase in fuel flow, which will make 3-5% more power than competitive 116 octane fuels. Q16's oxygenation will significantly expand the range of air/fuel ratio acceptability, so performance will be more consistent and won't vary as dramatically with altitude or density changes. For bracket racers, variations in ET from run to run will be substantially reduced. This added fuel flow also effectively increases its octane by 6-8 numbers above its standard ASTM octane rating.
• Color: Yellow
• Oxygenated: Yes
• Motor Octane: 116
• Research Octane: 120+
• Specific Gravity: .716 at 60° F
C16
Used in turbocharged engines, blown engines and nitrous applications with CRs up to 17:1. Recommended by the top nitrous oxide companies. Spec Fuel for NHRA Comp Eliminator.
• Color: Blue
• Motor Octane: 117
• Specific gravity: .735 at 60° F
EDIT: went back reread OP and fuel wasnt changed, sorry. Atleast the post showes the descriptions of the fuels off VPs site.
Last edited by whitey4d; Apr 10, 2008 at 06:50 PM.
Ya i picked up 5 gallons the other day since my local VP distributor brought it up and gave me the 5 gallons for $20 to test out. I wish they would do that with the VP import! 
Chris
Chris
Not to highjack this thread but I want it to be clear I DID NOT SELL A HTA37R TO ANY CUSTOMER WITH THE FP CAST TURBINE HOUSING. That was ordered directly from FP without any speaking with me. NO way in hell would I have ever suggested that. That's all I have to say and sorry for putting that in this thread. My apologies.