LS1 ? In a SC400/300 has it been done ?
12-03-06, 01:35 PM
#46
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true that, i'm a fan of both jibby, i'd like to see someone try some n/a sc400 performance, i'm really glad your trying the cams, then i'd like to see an ls1 swaped sc400, there are pros and cons to both.
12-03-06, 01:48 PM
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if you can get the e-manage ultimate break the rev limiter on the sc400 you'd be making a huge break through for sc400 performance, i've never heard of a piggyback doing it.
12-03-06, 02:00 PM
#49
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Go find a salvage Fbody so you can grab its T56 and potential goodies to see if the accessory belt and oilpan work better for ya.
However, if your wanting to do it big, wait for the LSX block(should be around 4K in shortblock form i think), you'll be able to get around 2500 horsepower out of it turbo'd, supercharg'd, or mega cubed to 500+. But going that route you'll want a TH400 beefed up and a 9"
However, if your wanting to do it big, wait for the LSX block(should be around 4K in shortblock form i think), you'll be able to get around 2500 horsepower out of it turbo'd, supercharg'd, or mega cubed to 500+. But going that route you'll want a TH400 beefed up and a 9"
12-03-06, 02:05 PM
#50
Lexus Test Driver
I'm just going by what their specs suggest, and split second also sells some signal clamps that claim to be capable of the same thing--
It basically just reads the tach signal and when it reaches the preset you program it with just before fuel cut, it sends a clamped signal, where it tells the ecu it's turning 6300, and the piggy back keeps feeding it fuel under WOT operation up until it reaches it's fuel cut at 8000 [kaboom] rpms-- I'd keep it around 7500 for fuel cut myself--
While it's revving up there or at any rpm under WOT-- the piggyback is operating the fuel/timing according to it's wot pre-tuned map you already told it to use-- so no fuel cut, and the piggyback can read the rpms and send the correct fuel/timing control until 7500 rpms....
This would of course need some sort of tranny controller to raise shift points or it would be useless...
So the ecu just thinks the motor is revving a steady 6300 anywhere above that rpm due to the signal clamp-- and the motor keeps getting fuel, as the Piggy Back just keeps modulating the injectors itself--
The ONLY thing I forsee a problem with is the stock tach ---- It seems to me that it would just sit at 6300 or so until the revs come back down--
You could:
A: not worry about it, as it's not going to blow if you tuned it right and don't keep it up there too long at a time
B: get an aftermarket tach-- Which would suck since the factory unit goes to 8k
It basically just reads the tach signal and when it reaches the preset you program it with just before fuel cut, it sends a clamped signal, where it tells the ecu it's turning 6300, and the piggy back keeps feeding it fuel under WOT operation up until it reaches it's fuel cut at 8000 [kaboom] rpms-- I'd keep it around 7500 for fuel cut myself--
While it's revving up there or at any rpm under WOT-- the piggyback is operating the fuel/timing according to it's wot pre-tuned map you already told it to use-- so no fuel cut, and the piggyback can read the rpms and send the correct fuel/timing control until 7500 rpms....
This would of course need some sort of tranny controller to raise shift points or it would be useless...
So the ecu just thinks the motor is revving a steady 6300 anywhere above that rpm due to the signal clamp-- and the motor keeps getting fuel, as the Piggy Back just keeps modulating the injectors itself--
The ONLY thing I forsee a problem with is the stock tach ---- It seems to me that it would just sit at 6300 or so until the revs come back down--
You could:
A: not worry about it, as it's not going to blow if you tuned it right and don't keep it up there too long at a time
B: get an aftermarket tach-- Which would suck since the factory unit goes to 8k
12-03-06, 03:27 PM
#51
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The best piggy back ECU available is the SMT6 and even better the SMT7 from my reads.. Those expensive piggy-back ECU's have just about every option you would want and need and can practically wipe your **** for you after you take a dump...
WD - I did not know I had a fan base...Thanks bro...you da man....
WD - I did not know I had a fan base...Thanks bro...you da man....
12-03-06, 05:55 PM
#52
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aw man... My alternator went out today in my SC400, and its snowing tomrrow...dam looks like ill be using public transportation, There is no way ill drive my vette in the snow. I rather walk
12-03-06, 09:24 PM
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I'm just going by what their specs suggest, and split second also sells some signal clamps that claim to be capable of the same thing--
It basically just reads the tach signal and when it reaches the preset you program it with just before fuel cut, it sends a clamped signal, where it tells the ecu it's turning 6300, and the piggy back keeps feeding it fuel under WOT operation up until it reaches it's fuel cut at 8000 [kaboom] rpms-- I'd keep it around 7500 for fuel cut myself--
While it's revving up there or at any rpm under WOT-- the piggyback is operating the fuel/timing according to it's wot pre-tuned map you already told it to use-- so no fuel cut, and the piggyback can read the rpms and send the correct fuel/timing control until 7500 rpms....
This would of course need some sort of tranny controller to raise shift points or it would be useless...
So the ecu just thinks the motor is revving a steady 6300 anywhere above that rpm due to the signal clamp-- and the motor keeps getting fuel, as the Piggy Back just keeps modulating the injectors itself--
The ONLY thing I forsee a problem with is the stock tach ---- It seems to me that it would just sit at 6300 or so until the revs come back down--
You could:
A: not worry about it, as it's not going to blow if you tuned it right and don't keep it up there too long at a time
B: get an aftermarket tach-- Which would suck since the factory unit goes to 8k
It basically just reads the tach signal and when it reaches the preset you program it with just before fuel cut, it sends a clamped signal, where it tells the ecu it's turning 6300, and the piggy back keeps feeding it fuel under WOT operation up until it reaches it's fuel cut at 8000 [kaboom] rpms-- I'd keep it around 7500 for fuel cut myself--
While it's revving up there or at any rpm under WOT-- the piggyback is operating the fuel/timing according to it's wot pre-tuned map you already told it to use-- so no fuel cut, and the piggyback can read the rpms and send the correct fuel/timing control until 7500 rpms....
This would of course need some sort of tranny controller to raise shift points or it would be useless...
So the ecu just thinks the motor is revving a steady 6300 anywhere above that rpm due to the signal clamp-- and the motor keeps getting fuel, as the Piggy Back just keeps modulating the injectors itself--
The ONLY thing I forsee a problem with is the stock tach ---- It seems to me that it would just sit at 6300 or so until the revs come back down--
You could:
A: not worry about it, as it's not going to blow if you tuned it right and don't keep it up there too long at a time
B: get an aftermarket tach-- Which would suck since the factory unit goes to 8k
09-23-07, 04:42 PM
#55
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None of these problems arise with the ls1 as you can reprogram the ECU.. i know the ECU has a tach output multiplier which you can modify. I am pretty sure you could make the ECU control the stock gauges.
09-28-07, 07:08 AM
#56
I have ridden in a pair of TT Z06s and the power and torque at 12 psi on pump gas is incredible. The cars make 7xx whp and the same torque and feel infinitly faster than the 900 whp Supra I have ridden in. For the money a boosted LS motor is hard to beat. I think that it would be a sweet swap to try if you had the time and money.
05-23-10, 08:26 AM
#58
A LS1 with a remoted mounted turbo has great results.
I am good buddys with the CEO of STS turbos so i might be doing a system from him...
LS1 Camaro/Firebird
Performance Results
Boost: 5 psi
Rear Wheel Horsepower: 414
%'d increase: 30%
Rear Wheel Torque: 450
%'d increase: 35%
Boost: 8 psi
Rear Wheel Horsepower: 508
%'d increase: 59%
Rear Wheel Torque: 548
%'d increase: 64%
1/4 mile time reduction: ~1 second
I am good buddys with the CEO of STS turbos so i might be doing a system from him...
LS1 Camaro/Firebird
Performance Results
Boost: 5 psi
Rear Wheel Horsepower: 414
%'d increase: 30%
Rear Wheel Torque: 450
%'d increase: 35%
Boost: 8 psi
Rear Wheel Horsepower: 508
%'d increase: 59%
Rear Wheel Torque: 548
%'d increase: 64%
1/4 mile time reduction: ~1 second
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