I ordered the Greddy T78 today!
10-10-01, 01:58 PM
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To tune over 18 psi you will have to have a 3 bar map sensor, regardless of whether you're using the PFC to control boost or another unit.
If you still have the original map sensor in the PFC, you can not adjust or control your leading and trailing timing maps; nor can you accurately control fuel either. Even trying to control boost over 18 psi is flying blind. The 3 bar map sensor will allow for tuning past 17 psi.
To run more than 18 psi on the stock map sensor is playing Russian roulette with your engine. The recommendation is to run the 3 bar map sensor that comes with the boost control kit from Apexi. The down side is the only way to get that map sensor is to buy that kit ($380.00). Since I'm controlling boost with the PFC, I got that kit
That map sensor comes completely blank. So inserting values and then tuning it will take a long time
IMHO, 544 rwhp at 19 psi on pump gas is really hard to believe...and I am (apparently) one of the few people out there that has positive things to say about Ray.
If you still have the original map sensor in the PFC, you can not adjust or control your leading and trailing timing maps; nor can you accurately control fuel either. Even trying to control boost over 18 psi is flying blind. The 3 bar map sensor will allow for tuning past 17 psi.
To run more than 18 psi on the stock map sensor is playing Russian roulette with your engine. The recommendation is to run the 3 bar map sensor that comes with the boost control kit from Apexi. The down side is the only way to get that map sensor is to buy that kit ($380.00). Since I'm controlling boost with the PFC, I got that kit
That map sensor comes completely blank. So inserting values and then tuning it will take a long time
IMHO, 544 rwhp at 19 psi on pump gas is really hard to believe...and I am (apparently) one of the few people out there that has positive things to say about Ray.
10-11-01, 01:36 PM
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Im running the Power Fc for right now.....If Im satisfied with it, I'll keep it, if not I'll prolly go Haltech.
BTW.....I ordered the RP fuel rail w/ 2 1600cc secondaries and sx fuel reg.....so I'll be selling my 2 month old (RC Engineering) 1200cc secondaries for $195
BTW.....I ordered the RP fuel rail w/ 2 1600cc secondaries and sx fuel reg.....so I'll be selling my 2 month old (RC Engineering) 1200cc secondaries for $195
10-15-01, 12:25 AM
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Originally posted by ErnieT
Don't laugh guys, but I cancelled my order for the T78 and went with the stage 2 KKK single from Ray Lochead instead. I figured if Im spending the money, mine as well get the one I really want. So, it'll be here next week. I'll keep you guys posted. It supposed to be good for 540rwhp at 19lbs of boost.......we'll see
Ernie
Don't laugh guys, but I cancelled my order for the T78 and went with the stage 2 KKK single from Ray Lochead instead. I figured if Im spending the money, mine as well get the one I really want. So, it'll be here next week. I'll keep you guys posted. It supposed to be good for 540rwhp at 19lbs of boost.......we'll see
Ernie
95 RX-7 black touring
T-78 single turbo with everything possibly upgraded except motor
10-15-01, 06:50 AM
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Just becasue RP says so, it makes it so. Give me a break. And I suppose you think Ari uses a T78 just like yours, huh? Don't think so. Im not saying I'll make 540rwhp, but I will make more than your T78.
10-15-01, 10:11 AM
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Originally posted by ErnieT
Just becasue RP says so, it makes it so. Give me a break. And I suppose you think Ari uses a T78 just like yours, huh? Don't think so. Im not saying I'll make 540rwhp, but I will make more than your T78.
Just becasue RP says so, it makes it so. Give me a break. And I suppose you think Ari uses a T78 just like yours, huh? Don't think so. Im not saying I'll make 540rwhp, but I will make more than your T78.
ill take your bet
10-15-01, 01:05 PM
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You should be able to use any MAP sensor that goes up to the boost pressure you want to use. The PFC just wants to see a voltage based on manf. pressure. You will probably have to mess with the PIM voltages and maybe adjust many of the values in the maps.
So even though Apex doesn't make a boost kit anymore, it shouldn't stop you from being able to use a non-stock sensor, but it does make it a bit harder.
So even though Apex doesn't make a boost kit anymore, it shouldn't stop you from being able to use a non-stock sensor, but it does make it a bit harder.
10-15-01, 01:23 PM
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Ernie I'll take your injectors. my email is bramage@bellsouth.net
10-15-01, 02:05 PM
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Anyone know if the Blitz SBC-ID comes with a 3 bar sensor? Im susposted to be ordering that in about a week but i havent seen anything bout a 3 bar sensor..
10-16-01, 12:02 AM
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Originally posted by ErnieT
Just becasue RP says so, it makes it so. Give me a break. And I suppose you think Ari uses a T78 just like yours, huh? Don't think so. Im not saying I'll make 540rwhp, but I will make more than your T78.
Just becasue RP says so, it makes it so. Give me a break. And I suppose you think Ari uses a T78 just like yours, huh? Don't think so. Im not saying I'll make 540rwhp, but I will make more than your T78.
We'll see about that!!!! How much more?????????????? more than 450 rwhp on pump gas. I DON'T THINK SO!!!!!!!!! But if you do e-mail me!!
10-16-01, 12:12 AM
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Originally posted by ErnieT
Just becasue RP says so, it makes it so. Give me a break. And I suppose you think Ari uses a T78 just like yours, huh? Don't think so. Im not saying I'll make 540rwhp, but I will make more than your T78.
Just becasue RP says so, it makes it so. Give me a break. And I suppose you think Ari uses a T78 just like yours, huh? Don't think so. Im not saying I'll make 540rwhp, but I will make more than your T78.
By the way I am not here to argue about anything, but I think you want a turbo that is streetable yet VERY Reliable. The T-78 is a proven turbo that works very well on RX-7s and Supras as well. Just look at the statistics. The first supra in the nines with a 6-speed transmission uses a T-78, as well as many of the people here on this forum. I for one feel its cheaper than a lot of the other turbos and performs just as well. You just can't beat the power of the T-78. just ask anyone that has one. And by the way Its VERY RELIABLE!!! Do some more research on it and talk to me later!!
P.S. JUST BECAUSE RAY SAYS SO, IT MAKES IT SO. GIVE ME A BREAK. 544 RWHP ON PUMP GAS???? LOOK AT HIS DYNO, SEE ANYTHING FUNNY???
Last edited by kamikazeRyan; 10-16-01 at 12:18 AM.
10-16-01, 12:55 AM
#38
The amount of boost you can run is determined by octane! So with that in mind you can make over 450RWHP with pump gas if the rest of the combination(porting,tuning etc.) allows you to that with reliability.
There are people making over 450 RWHP with pump gas and are not having any problems so don't say it can't be done.
crispeed
87TII
9.20@150mph
651RWHP/520RWTQ
There are people making over 450 RWHP with pump gas and are not having any problems so don't say it can't be done.
crispeed
87TII
9.20@150mph
651RWHP/520RWTQ
Last edited by crispeed; 10-16-01 at 12:57 AM.
10-16-01, 09:06 AM
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If your car makes 540rwhp 19psi I will shoot myself. Is your engine street ported with any different seals? What kind of cfms does that thing flow? Is it a ball bearing turbo?
10-16-01, 09:17 AM
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If your car makes 540rwhp 19psi I will shoot myself. Is your engine street ported with any different seals? What kind of cfms does that thing flow? Is it a ball bearing turbo?
I'm sure that turbo makes good power. But 540 rwhp @ 19 psi on pump gas seems a little far fetched, to me.
Can't wait until the dyno results.
10-16-01, 10:00 AM
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Poweraxel...........You giving me a complex!! Your supposed to be rooting for me not throwing me out to the wolves!!:p
As for making 540rwhp, I know I won't make that much. For one, the Power FC can only make 17.5lbs of boost and the optional 3bar sensor is supposed to be very inaccurate and hard as hell to tune according to KDR and SR. If I make 475rwhp at 17.5lbs of boost, I'll be happy. Plus, this spring Im going with the Haltech.
As far as my engine is concerned. Its been built by KD Rotary with a street port, teflon coolant seals, excentric shaft mod, and Hurley double spring heavy duty apex seals.
As for making 540rwhp, I know I won't make that much. For one, the Power FC can only make 17.5lbs of boost and the optional 3bar sensor is supposed to be very inaccurate and hard as hell to tune according to KDR and SR. If I make 475rwhp at 17.5lbs of boost, I'll be happy. Plus, this spring Im going with the Haltech.
As far as my engine is concerned. Its been built by KD Rotary with a street port, teflon coolant seals, excentric shaft mod, and Hurley double spring heavy duty apex seals.
10-16-01, 10:05 AM
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The Greddy T78 has a 17 A/R housing and the Stage 2 KKK has a 24 A/R housing plus its ballbearing so its "supposed " to spool faster than the T78. We'll see.
10-16-01, 10:22 AM
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The bigger the A/R the slower it'll build boost..backpressure helps build boost.
but the ballbearing option should help though..do you know if its a true dual ball bearing or just the turbine?
but the ballbearing option should help though..do you know if its a true dual ball bearing or just the turbine?
Originally posted by ErnieT
The Greddy T78 has a 17 A/R housing and the Stage 2 KKK has a 24 A/R housing plus its ballbearing so its "supposed " to spool faster than the T78. We'll see.
The Greddy T78 has a 17 A/R housing and the Stage 2 KKK has a 24 A/R housing plus its ballbearing so its "supposed " to spool faster than the T78. We'll see.
10-16-01, 10:27 AM
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Originally posted by ErnieT
Poweraxel...........You giving me a complex!! Your supposed to be rooting for me not throwing me out to the wolves!!:p
.
Poweraxel...........You giving me a complex!! Your supposed to be rooting for me not throwing me out to the wolves!!:p
.
10-16-01, 10:40 AM
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So no one knows how the size of the turbos comare besides the AR housing?I am real curious to se what numbers you pull good luck, I hope it does what it is supposed to but I also don't cause I will have to shoot myself. How much did you pay for the kit?