New Product RR Racing ISF Supercharger Kit -- Release Announcement
01-03-17, 06:59 AM
#151
01-03-17, 08:20 AM
#152
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Well, we have a lot over the Beemer, like reliability AND torque
Rafi
Rafi
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01-04-17, 01:48 PM
#154
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So what? Engine torque isn't important, it just makes you feel good. Gearing fixes all problems with engine torque by making sure the torque at the wheel is correct. Torque at the wheel really is everything. It is the F in F=MA.
If you really want to say something about the BMW curve, the real issue is there is no good shift point for it. It continues to increase power all the way to redline. Ideal shift points are built around the hp peak, because power is what moves you down the road. The BMW power "curve" means all you can do is shift at redline and drop power with every shift. Not at all what I would tune for.
If you really want to say something about the BMW curve, the real issue is there is no good shift point for it. It continues to increase power all the way to redline. Ideal shift points are built around the hp peak, because power is what moves you down the road. The BMW power "curve" means all you can do is shift at redline and drop power with every shift. Not at all what I would tune for.
01-06-17, 05:15 AM
#155
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So what? Engine torque isn't important, it just makes you feel good. Gearing fixes all problems with engine torque by making sure the torque at the wheel is correct. Torque at the wheel really is everything. It is the F in F=MA.
If you really want to say something about the BMW curve, the real issue is there is no good shift point for it. It continues to increase power all the way to redline. Ideal shift points are built around the hp peak, because power is what moves you down the road. The BMW power "curve" means all you can do is shift at redline and drop power with every shift. Not at all what I would tune for.
If you really want to say something about the BMW curve, the real issue is there is no good shift point for it. It continues to increase power all the way to redline. Ideal shift points are built around the hp peak, because power is what moves you down the road. The BMW power "curve" means all you can do is shift at redline and drop power with every shift. Not at all what I would tune for.
Well if engine torque makes you feel good, then isn't it important?
Actually, you are right, having that bottom end torque isn't going to make the car any faster on the track in a straight line situation, but the advantage of the torque is that its so much more relaxing to drive fast, you don't have to shift nearly as much, and you can keep engine RPM's lower at the the track.I have a video on our youtube channel of our first time at NJMP with the SC. I know the track reasonably well, and did it many times NA... and found myself constantly downshifting when it was completely unnecessary with the SC.
That said, I like the way the Rotrex builds boost very linearly. The car has sufficient torque, but its not overwhelming for the level of traction. I don't understand why Corvettes need those large positive displacement blowers, I think a such a light car would be better off with a progressive linear boost buildup and lower intitial torque output. Even professional race drivers who have driven the Z06 say that the car is very hard to drive without the performance traction management activated at all times.
Rafi
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We Engineer Track Proven Upgrades For Your Lexus!
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01-06-17, 07:04 AM
#156
That said, I like the way the Rotrex builds boost very linearly. The car has sufficient torque, but its not overwhelming for the level of traction. I don't understand why Corvettes need those large positive displacement blowers, I think a such a light car would be better off with a progressive linear boost buildup and lower intitial torque output. Even professional race drivers who have driven the Z06 say that the car is very hard to drive without the performance traction management activated at all times.
Rafi
Rafi
01-06-17, 10:34 AM
#157
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You're right about the ZO6 Vette Ralphie everything I've read and seen when it comes to the ZO6 on the track it's very difficult to modulate the way the Boost comes on. Thats why the GrandSport is the better of the two options for a track car it's essentially Z06 without the blower and because it doesn't have that blower it's a phenomenal track car.
Rafi
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01-09-17, 09:20 AM
#159
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Rafi
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We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
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06-06-17, 10:13 AM
#161
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Rafi,
Can you update the forum members here about the progress with the built 2UR motors that you guys have done? I've seen some pics lately from Wow Auto in Cali showcasing them with the S/C installed................
Curious as to what you guys improved on? And does that mean you guys are working on a bigger blower option since the current Rotrex is maxed out at 7 psi......
Can you update the forum members here about the progress with the built 2UR motors that you guys have done? I've seen some pics lately from Wow Auto in Cali showcasing them with the S/C installed................
Curious as to what you guys improved on? And does that mean you guys are working on a bigger blower option since the current Rotrex is maxed out at 7 psi......
Thanks
06-08-17, 06:03 AM
#162
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Rafi,
Can you update the forum members here about the progress with the built 2UR motors that you guys have done? I've seen some pics lately from Wow Auto in Cali showcasing them with the S/C installed................
Curious as to what you guys improved on? And does that mean you guys are working on a bigger blower option since the current Rotrex is maxed out at 7 psi......
Can you update the forum members here about the progress with the built 2UR motors that you guys have done? I've seen some pics lately from Wow Auto in Cali showcasing them with the S/C installed................
Curious as to what you guys improved on? And does that mean you guys are working on a bigger blower option since the current Rotrex is maxed out at 7 psi......
Thanks
Rafi
__________________
We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
06-23-17, 08:17 AM
#163
Hey All,
I am posting this on behalf of ISFinferno. Eddie is working on some custom carbon fiber engine covers for the ISF Supercharger setup. If any of you who have purchased or are thinking of purchasing the SC are interested, please let us know and we will proceed with this project:
-Rafi
I am posting this on behalf of ISFinferno. Eddie is working on some custom carbon fiber engine covers for the ISF Supercharger setup. If any of you who have purchased or are thinking of purchasing the SC are interested, please let us know and we will proceed with this project:
-Rafi
Hello Everyone,
I know we have been super exited to finally see the Super Charger set up for the IS-F and soon RC-f and GS-f. I have been working with Rafi on some Carbon fiber items for the IS-F, RC-f and GS-F. The following items will be available soon. I want to get a feel for what everyone thinks. RR-Racing will be exclusive dealer for the following items. For those who bought the carbon fiber tubing kit you can now have the following;
1. Full carbon fiber engine cover. $625.00
2. Carbon Fiber rear fender arches as found on the RC-f and GS-F. $300.00
3. Carbon fiber window switches (GS-F) (overlay) $750.00
4. Full carbon fiber GS-F and RC-F door sills. (overlay and real carbon coming soon) will need your oem for exchange. $625.00
5. Carbon Fiber mirrors. GS-F, RC-F and IS-F. (overlay) $450.00
6. RC-F and GS-F center trim on the steering wheel. (exchange required) $ 250.00
Many other items coming soon also. Again if you have any question feel free to contact Rafi and he will guide you and answer any and all your questions. Pictures to follow in the next day or so. Keep an eye out fellows.
I know we have been super exited to finally see the Super Charger set up for the IS-F and soon RC-f and GS-f. I have been working with Rafi on some Carbon fiber items for the IS-F, RC-f and GS-F. The following items will be available soon. I want to get a feel for what everyone thinks. RR-Racing will be exclusive dealer for the following items. For those who bought the carbon fiber tubing kit you can now have the following;
1. Full carbon fiber engine cover. $625.00
2. Carbon Fiber rear fender arches as found on the RC-f and GS-F. $300.00
3. Carbon fiber window switches (GS-F) (overlay) $750.00
4. Full carbon fiber GS-F and RC-F door sills. (overlay and real carbon coming soon) will need your oem for exchange. $625.00
5. Carbon Fiber mirrors. GS-F, RC-F and IS-F. (overlay) $450.00
6. RC-F and GS-F center trim on the steering wheel. (exchange required) $ 250.00
Many other items coming soon also. Again if you have any question feel free to contact Rafi and he will guide you and answer any and all your questions. Pictures to follow in the next day or so. Keep an eye out fellows.
Any updates on this? Guessing should probably go under a separate thread really?!
The mirror overlays would be good.
02-19-18, 10:33 AM
#164
OK, so regarding e85 tune, it can be done, but we would need a serious upgrade to the port fuel injectors. That would take a considerable amount of ECU development. Keep in mind, that the port injectors are normally turned off by the ECU above 3500 rpm, and I can tell you all that it was a major project to figure out how to control the port injectors above 3500rpm, when the ECU normally turns them off.
That said, its doable, but first we are going to try to see how much more power we can make with an Aquamist meth injection tune, and then we will try a race gas tune.
We are not crazy about e85, as it tends to gunk up injectors and the actual percent ethanol varies quite a bit. Cars that use e85 effectively and safely typically have a flex fuel sensor that can determine the % alcohol and adjust the tune accordingly -- this is something we will never be able to do on a stock ECU.
BTW, We may even try spinning the SC a bit faster. That said, the same limit on pump gas is really that 520-530whp range given the high compression of the stock motor.
Rafi
That said, its doable, but first we are going to try to see how much more power we can make with an Aquamist meth injection tune, and then we will try a race gas tune.
We are not crazy about e85, as it tends to gunk up injectors and the actual percent ethanol varies quite a bit. Cars that use e85 effectively and safely typically have a flex fuel sensor that can determine the % alcohol and adjust the tune accordingly -- this is something we will never be able to do on a stock ECU.
BTW, We may even try spinning the SC a bit faster. That said, the same limit on pump gas is really that 520-530whp range given the high compression of the stock motor.
Rafi
02-27-18, 11:33 AM
#165
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Rafi - Following up on my emails here in case others are waiting on this to place an order like I am. Thanks again for all your great work in furthering the Lexus brand! It's your tune after all that convinced me it was time to replace the IS-350 with something more track-worthy.
Actually the Aquamist meth injection is something that we tried a while ago. For safety reasons, we tested 50/50 mix of water and meth. The gains were no greater than running slightly higher octane fuel. The problem was that we had to inject a lot of water/meth to make a difference. On the street, that's fine... but at the track i went through 2 gallons of water/meth in 20 minutes or less.
That said, currently working on a complete fuel system upgrade for e85.
Rafi
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We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
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