The Turbokit is out and it's sick
We were considering selling these kits, but after reading several different reviews we have decided not to until ATP works out some of the combinations.
There is no way a turbo should get full boost at 4300rpm and only make 295whp. Honestly everyone we are talking to is saying the turbo kit is really laggy and isn't making the power it should be. I guess we will see in the long run how it does. I just don't see why for the same amount a money you could buy a whole turbo kit, not just a turbo.
There is no way a turbo should get full boost at 4300rpm and only make 295whp. Honestly everyone we are talking to is saying the turbo kit is really laggy and isn't making the power it should be. I guess we will see in the long run how it does. I just don't see why for the same amount a money you could buy a whole turbo kit, not just a turbo.
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From: Danville/Blackhawk, California
RnR-- Please understand that these numbers come from our dyno. Not the DD that you have used in the past. We have established our own testing methods and dyno calibrations. Even the "10 sec" RnR turbo'd car that we tuned a while back only made 400whp on our dyno. And that's at 30psi, with an Autronic, running a big GT35R. So please try to compare applies to applies.
Shiv
Shiv
Originally Posted by EVOVII_SWE
Thanks Az3ar, I'm VERY exited about this kit, ordered it on the 10’th this month but still no sign of it. They said it would take a few extra days to get the 4” version as well as they are waiting for the lower intercooler pipe that they are now supplying with the kit. I guess you will have one as well? The problem I have now is that my Motec tuner is on vacation for 3 weeks starting the week after the next and I will not have the kit in time to install it before that so I’ll just have to wait like at least 5 weeks from now 
I’ll be running this together with a full 3” exhaust with cat delete pipe, 780cc injectors, Tomei Procams 260 11,5mm lift and adjustable gears (got all that today from Japan
) so I think I will push the 3071 all the way. I already have Ross pistons 8,5:1 and Eagle rods and all ARP bolts in the engine so it should be able to handle pretty high boost. I guess it will be the type of fuel that puts the limit, my Motec M48 ECU are not capable of multiple maps so I will only tune it for pump gas. We get 98 octane pump gas here but I’m not sure it compares to 98 octane in the US? I might do a race fuel map as well but then I would need to manually load it into the Motec with a PC each and every time I would like to use it.
BTW how do you guys do when you change from pump gas to race gas and back again? Do you completely drain the fuel tank in between or are you running separate fuel tanks some way?
I’ll be running this together with a full 3” exhaust with cat delete pipe, 780cc injectors, Tomei Procams 260 11,5mm lift and adjustable gears (got all that today from Japan
) so I think I will push the 3071 all the way. I already have Ross pistons 8,5:1 and Eagle rods and all ARP bolts in the engine so it should be able to handle pretty high boost. I guess it will be the type of fuel that puts the limit, my Motec M48 ECU are not capable of multiple maps so I will only tune it for pump gas. We get 98 octane pump gas here but I’m not sure it compares to 98 octane in the US? I might do a race fuel map as well but then I would need to manually load it into the Motec with a PC each and every time I would like to use it.BTW how do you guys do when you change from pump gas to race gas and back again? Do you completely drain the fuel tank in between or are you running separate fuel tanks some way?
Originally Posted by RnR Racing
We were considering selling these kits, but after reading several different reviews we have decided not to until ATP works out some of the combinations.
There is no way a turbo should get full boost at 4300rpm and only make 295whp. Honestly everyone we are talking to is saying the turbo kit is really laggy and isn't making the power it should be. I guess we will see in the long run how it does. I just don't see why for the same amount a money you could buy a whole turbo kit, not just a turbo.
There is no way a turbo should get full boost at 4300rpm and only make 295whp. Honestly everyone we are talking to is saying the turbo kit is really laggy and isn't making the power it should be. I guess we will see in the long run how it does. I just don't see why for the same amount a money you could buy a whole turbo kit, not just a turbo.
Originally Posted by shiv@vishnu
RnR-- Please understand that these numbers come from our dyno. Not the DD that you have used in the past. We have established our own testing methods and dyno calibrations. Even the "10 sec" RnR turbo'd car that we tuned a while back only made 400whp on our dyno. And that's at 30psi, with an Autronic, running a big GT35R. So please try to compare applies to applies.
Shiv
Shiv
I cant agree more
Why in the world did you ever get a Dynoflash if SHiv is in Cali? By the way, no way will you get 400 rpm sooner spool up with a cat delete, not happening, but maybe Shiv will convince you that it will work.
Getting rid of the cat might free up 200rpm. You are not making the power where a 2.5" cat is going to be a huge restriction yet. The turbine housing plays a huge role on the GT series turbos. If it isn't done right then the turbo will be laggy and not make the power it should. Just ask FP how long it took them to build a correct turbine housing for the GT series turbos.
I understand your dyno reads low, but the RnR car made 425whp and had issues at the time.
I understand your dyno reads low, but the RnR car made 425whp and had issues at the time.
Shiv never promised Az3ar that his spool would be 400 faster with a cat delete pipe. He did say that a cat delete pipe will help with spool though, seeing that he has a 3" system with a stock 2.5" cat.
Yup, shiv never promised me that it will spool 400 RPM faster. however I am sure that ATP is not lying either. I am sure it will spool quicker with delete pipe. today i saw it spool at 4100 rpm. will see how much it will spool with my delete pipe and headers 
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From: Danville/Blackhawk, California
Originally Posted by RnR Racing
I understand your dyno reads low, but the RnR car made 425whp and had issues at the time.
It's also quite typical to see 300-400rpm earlier spool up with a test pipe installed. In fact, small turbos are more back pressure sensitive than larger ones.
Shiv
Last edited by shiv@vishnu; Jun 24, 2004 at 10:23 PM.
Originally Posted by shiv@vishnu
Yes, then it came over to our shop and put down, IIRC, under 300whp. It was then tuned up to 400whp at 30psi and race gas.
It's also quite typical to see 300-400rpm earlier spool up with a test pipe installed. In fact, small turbos are more back pressure sensitive than larger ones.
Shiv
It's also quite typical to see 300-400rpm earlier spool up with a test pipe installed. In fact, small turbos are more back pressure sensitive than larger ones.
Shiv
no one could have said it better. and thats why i am happy with my car.
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no one seems to have made any comments on the graphs that you have posted?
to me the biggest problem with running the cat in place is that crater sized dip in the power curve between fool boost and 6400. On a turbo engine top end this restriction is seriously strangling power back pressure is a killer. you may as well have a 2.5" system. you will gain at least 10whp peak and it will hold boost much stronger if you illimimnate this cat...
I cannot understand why you have spent so much and have stopped short for the cost of a night out.
to me the biggest problem with running the cat in place is that crater sized dip in the power curve between fool boost and 6400. On a turbo engine top end this restriction is seriously strangling power back pressure is a killer. you may as well have a 2.5" system. you will gain at least 10whp peak and it will hold boost much stronger if you illimimnate this cat...
I cannot understand why you have spent so much and have stopped short for the cost of a night out.
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From: Australia
Hello all , I have been watching this thread closely because of my interest in the GT3071R turbo . ATP has just released the GT2871R turbo which has the hot side of the GT28RS and the cold side of the GT3071R . Notice that the 2871 uses a .60AR TO4B compressor cover and adapter ring where the 3071 uses .50AR TO4E cover/ring for the same 56 trim GT35 wheel . Also note that it is offered with an alternate 48 trim comp wheel .
Does anyone here think that its possible to use the TO4B cover/ring to get the GT3071R off its butt a little earlier , and if so if it was offered with the 48 trim wheel would this also help without giving too much away at the top end ?
While I'm here , could I be excused for thinking that ATP's anti reverse rotation exhaust housing looks a bit like the old Garrett on center housing , could this factor be costing the Evo conversion some spool .
Just some food for thought thanks A .
Does anyone here think that its possible to use the TO4B cover/ring to get the GT3071R off its butt a little earlier , and if so if it was offered with the 48 trim wheel would this also help without giving too much away at the top end ?
While I'm here , could I be excused for thinking that ATP's anti reverse rotation exhaust housing looks a bit like the old Garrett on center housing , could this factor be costing the Evo conversion some spool .
Just some food for thought thanks A .
Originally Posted by robvii
no one seems to have made any comments on the graphs that you have posted?
to me the biggest problem with running the cat in place is that crater sized dip in the power curve between fool boost and 6400. On a turbo engine top end this restriction is seriously strangling power back pressure is a killer. you may as well have a 2.5" system. you will gain at least 10whp peak and it will hold boost much stronger if you illimimnate this cat...
I cannot understand why you have spent so much and have stopped short for the cost of a night out.
to me the biggest problem with running the cat in place is that crater sized dip in the power curve between fool boost and 6400. On a turbo engine top end this restriction is seriously strangling power back pressure is a killer. you may as well have a 2.5" system. you will gain at least 10whp peak and it will hold boost much stronger if you illimimnate this cat...
I cannot understand why you have spent so much and have stopped short for the cost of a night out.
I did not stop at all from spending money. I live in CA and I am worried that a cop will look under my car and find out that I have no CAT. They will put me and jail, fine me with $600 ticket and on top of all that my car will get impounded. This is not fun to go through. I know that I want a test pipe but I have to see if it is really gana put me in trouble.