Forged Performance: 2011 STi Sedan MONSTER Build **check back often**
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Here is the sought after AMS Intake Manifold. Let me remind you this is their Prototype. This is not a final product. The final product will be made from cast and will look much different. Forged Performance is honored to be given the opportunity to test the manifold. We will be performing a back to back dyno session. We will let everyone know the performance, and feedback of the AMS prototype.
Install and Testing coming soon!
Thanks for looking!
Tray
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Got a few more items in the mail today that I'd like to share. Tomei sent us a few goodies that are going to be perfect for our Engine Build. We ordered the Tomei Timing belt, Belt guide, Baffle stiffner, and 270/270 Camshafts. The quality of each of the Tomei parts are second to none. We look forward to installing these items, and putting the camshafts to test.
The Tomei Kevlar Timing belt, and Belt guide. The timing belt is super tough and is claimed to be 4x the strength of OEM without sacrificing durability. We paired the timing belt with Tomei's belt guide. The Belt guide is a straight cut of aluminum with an extended length to securely apply more tension to the timing belt. This product comes in handy when immediate changes in torque are experienced by the engine, eliminating belt whip.
Tomei's highly experienced engineers developed an engine baffle stiffener to help prevent bearing failure, and help regulate the oil supply. During the R&D Tomei found one of the main causes of engine problems on the EJ20/25 are the bearings. The majority of the cases were caused by lack of motor oil in the oil pan (sump) and passages. They also found that the lack of rigidity in the crank case is also another problem facing this engine design. Under extensive research, Tomei created the baffle stiffener which helps strengthen the left and right side of the crankcase to help provide the added support with its dual structural design. The rubber baffle design greatly aids the regulation of the oil supply. This gives added control to reduce blowby for EJ20/25 owners who use their cars for high performance driving.
The most exciting parts that arrived were the Tomei PROCAMS. We decided to go with Tomei's PROCAM 270 Intake, & 270 Exhaust. We felt this was the best bet for our large turbo application. The specs on the camshafts are quite impressive. The Intake side has 11.0mm lift, and the exhaust side has a lift of 10.8mm. With that lift we know it will make an significant improvement to our 2011 STi build. Not only do we hope to achieve more power with the camshafts but improve the powerband. We look forward to performing a dyno test in the weeks to come.
Thanks for looking!
Tray
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Hello everyone. No major mods for today's update. But I did want to share some pictures after our most recent auto detail. Mike from Mirror Detailing spent the afternoon performing a 2 stage paint correction. We had a lot of swirls on the car straight from the dealership. Have a look at the work!
Before Paint Correction:
After 2 Step Paint Correction:
Outside shots:
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Hey guys and girls, just a little teaser update on whats next for the Forged Performance STi!
What your looking at is a Manley stoker kit, including crank, rods, pistons, valves and springs with ACL bearings.
Next up, the first and only set available right now...
That's right, we have the first and only set available of JRZ RS1 which are a new design.
And thats how its done.
What your looking at is a Manley stoker kit, including crank, rods, pistons, valves and springs with ACL bearings.
Next up, the first and only set available right now...
That's right, we have the first and only set available of JRZ RS1 which are a new design.
And thats how its done.
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YouTube - Forged Performance Subaru STi Road Atlanta Shakedown Testing
YouTube - Forged Performance Road Atlanta March 2011
Just what we have for now.
Enjoy.
YouTube - Forged Performance Road Atlanta March 2011
Just what we have for now.
Enjoy.
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Ok, the moment you've all been waiting for. Before reviewing the dynos I would like to review my testing methodology so that everyone is on the same page with respect to the gains achieved.
At Forged Performance, we take delta testing very seriously. I personally handle all aspects of the process to ensure a true and accurate comparison. Results can easily, yet often, become unintentionally skewed in either direction. But our objective is to give you all a true no-BS assessment of any part that we test.
That said, here is our testing methodology.
1) E85 Fuel and Stock Engine (Baseline was 196whp on our dyno)
2) Boost pressure reduced to 23psi to insure a very stable AF ratio while not overwhelming our single fuel pump.
3) Same day test 6 hours apart and vehicle was not unstrapped or moved from the dyno. We had to do quite a bit of modification to make this prototype fit, but of course production versions will be bolt on like all AMS products.
4) Ambient temp was within 3 degrees F variation in our shop, through the dyno testing process.
5) Ramp rate (load on the rollers) was reduced to 140 in order to reduce the effects of heat soak, which can mislead the results.
4) Dyno Fan running for all runs.
5) 2 second "dwell" or hold time before releasing the dyno. For reference, the dwell time can alter the boost ramp up as it pre-heats the turbo.
6) The lowest and highest dyno numbers are rejected for both plenums as well as any unusually high or low numbers.
7) AF and boost was equalized within .2 psi and .2 AF ratio points for a true apples to apples comparison of the gains. Boost curve is posted for reference so there is no dispute on boost levels run.
That said, the results were outstanding at such low boost pressure. We achieved a peak of 20whp and 28lb/ft trq. More impressively, there was virtually no loss of power or trq anywhere on the curve, and many areas showed gains of 30whp and 40lb/ft! So in addition to a notable peak power improvement, we saw a tremendous improvement in area under the curve throughout the power band.
So far, we are very pleased with the AMS Protoype STi plenum. We feel the gains will be even more impressive as we raise the boost further after our FP S2 stroker race engine goes in. We will be working with AMS closely on some additional changes and modifications to make this plenum the best out there.
YouTube - Forged Performance 2011 STi Dyno Tests the AMS Prototype Intake Manifold
At Forged Performance, we take delta testing very seriously. I personally handle all aspects of the process to ensure a true and accurate comparison. Results can easily, yet often, become unintentionally skewed in either direction. But our objective is to give you all a true no-BS assessment of any part that we test.
That said, here is our testing methodology.
1) E85 Fuel and Stock Engine (Baseline was 196whp on our dyno)
2) Boost pressure reduced to 23psi to insure a very stable AF ratio while not overwhelming our single fuel pump.
3) Same day test 6 hours apart and vehicle was not unstrapped or moved from the dyno. We had to do quite a bit of modification to make this prototype fit, but of course production versions will be bolt on like all AMS products.
4) Ambient temp was within 3 degrees F variation in our shop, through the dyno testing process.
5) Ramp rate (load on the rollers) was reduced to 140 in order to reduce the effects of heat soak, which can mislead the results.
4) Dyno Fan running for all runs.
5) 2 second "dwell" or hold time before releasing the dyno. For reference, the dwell time can alter the boost ramp up as it pre-heats the turbo.
6) The lowest and highest dyno numbers are rejected for both plenums as well as any unusually high or low numbers.
7) AF and boost was equalized within .2 psi and .2 AF ratio points for a true apples to apples comparison of the gains. Boost curve is posted for reference so there is no dispute on boost levels run.
That said, the results were outstanding at such low boost pressure. We achieved a peak of 20whp and 28lb/ft trq. More impressively, there was virtually no loss of power or trq anywhere on the curve, and many areas showed gains of 30whp and 40lb/ft! So in addition to a notable peak power improvement, we saw a tremendous improvement in area under the curve throughout the power band.
So far, we are very pleased with the AMS Protoype STi plenum. We feel the gains will be even more impressive as we raise the boost further after our FP S2 stroker race engine goes in. We will be working with AMS closely on some additional changes and modifications to make this plenum the best out there.
YouTube - Forged Performance 2011 STi Dyno Tests the AMS Prototype Intake Manifold
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