View Poll Results: How do you tune your car? Vote now.
Stock
34
27.42%
Mechnical adjustment (ie. rising rate fuel pressure regulator)
9
7.26%
Piggy Back Computer (eManage, S-AFC, etc)
46
37.10%
Full stand-alone fuel and timing computer (AEM)
35
28.23%
Voters: 124. You may not vote on this poll
How do you tune your car? Vote now.
09-22-05, 04:32 PM
#1
Lexus Champion
Thread Starter
How do you tune your car? Vote now.
Okay I know we have all been in various stages in tuning our cars and we have seen the pitfalls of each method. To provide a great knowledge base on tuning I ask the following:
SC Model: SC300/400
Induction: NA or Turbo
Fuel: What upgrades?
Other misc upgrades: (ie. cams, crank, etc)
Tuning components (fuel management, timing, etc.):
Issues:
Fixes:
Recommendations:
Let us know what your experiences are so we can steer people free from making the same mistakes.
SC Model: SC300/400
Induction: NA or Turbo
Fuel: What upgrades?
Other misc upgrades: (ie. cams, crank, etc)
Tuning components (fuel management, timing, etc.):
Issues:
Fixes:
Recommendations:
Let us know what your experiences are so we can steer people free from making the same mistakes.
09-23-05, 08:53 AM
#3
Chicago Lexus Club Moderator
Originally Posted by Hermosa
Okay I know we have all been in various stages in tuning our cars and we have seen the pitfalls of each method. To provide a great knowledge base on tuning I ask the following:
SC Model: SC300/400
Induction: NA or Turbo
Fuel: What upgrades?
Other misc upgrades: (ie. cams, crank, etc)
Tuning components (fuel management, timing, etc.):
Issues:
Fixes:
Recommendations:
Let us know what your experiences are so we can steer people free from making the same mistakes.
SC Model: SC300/400
Induction: NA or Turbo
Fuel: What upgrades?
Other misc upgrades: (ie. cams, crank, etc)
Tuning components (fuel management, timing, etc.):
Issues:
Fixes:
Recommendations:
Let us know what your experiences are so we can steer people free from making the same mistakes.
Chris
09-23-05, 10:16 AM
#4
Lexus Champion
Join Date: Nov 2003
Location: Florida
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My comments are to tuning in general,
I agree 100%
Couple of other basic concepts,
1) understand that not all problems are tuning, some are mechanical and all options should be considered when diagnosing issues. Tuning is a great tool, but it will not fix everything.
2) when testing, change items is small increments, otherwise car might go BOOM!
Originally Posted by Dewsc300
patience
Couple of other basic concepts,
1) understand that not all problems are tuning, some are mechanical and all options should be considered when diagnosing issues. Tuning is a great tool, but it will not fix everything.
2) when testing, change items is small increments, otherwise car might go BOOM!
09-24-05, 05:34 PM
#5
SC Model: 300
Induction: greddy t-78 turbo
Fuel: external pump -12 supply to -10 feed PHR -6 dual feed rail w/ 850cc injectors
Other misc upgrades: none/stock internals
Tuning componets: vpc/safc II
Issues: need for vast amounts of money
Fixes: usual w/ any 13 year old car
Recommendations: know in advance exactly what you want the car to do. street, drag,
drift, dyno queen, etc. assemble all your parts for that goal & build it once.
Induction: greddy t-78 turbo
Fuel: external pump -12 supply to -10 feed PHR -6 dual feed rail w/ 850cc injectors
Other misc upgrades: none/stock internals
Tuning componets: vpc/safc II
Issues: need for vast amounts of money
Fixes: usual w/ any 13 year old car
Recommendations: know in advance exactly what you want the car to do. street, drag,
drift, dyno queen, etc. assemble all your parts for that goal & build it once.
09-24-05, 05:56 PM
#6
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Join Date: Jul 2005
Location: Texas
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Originally Posted by supra dr
SC Model: 300
Induction: greddy t-78 turbo
Fuel: external pump -12 supply to -10 feed PHR -6 dual feed rail w/ 850cc injectors
Other misc upgrades: none/stock internals
Tuning componets: vpc/safc II
Issues: need for vast amounts of money
Fixes: usual w/ any 13 year old car
Recommendations: know in advance exactly what you want the car to do. street, drag,
drift, dyno queen, etc. assemble all your parts for that goal & build it once.
Induction: greddy t-78 turbo
Fuel: external pump -12 supply to -10 feed PHR -6 dual feed rail w/ 850cc injectors
Other misc upgrades: none/stock internals
Tuning componets: vpc/safc II
Issues: need for vast amounts of money
Fixes: usual w/ any 13 year old car
Recommendations: know in advance exactly what you want the car to do. street, drag,
drift, dyno queen, etc. assemble all your parts for that goal & build it once.
09-25-05, 03:26 PM
#7
'92 SC4, basically stock internals, slight port cleanup:
I use a piggyback ECU(Unichip/WeaponR), also fine tune using the stock FPR for enrichment only.
It takes me on average a week to dial in a setting after an airflow change (ie. porting, larger air cleaner, MAF mods), by the time the factory ecu has re-learned, and adjusted during closed loop operation.
Patience, a gas card, a carefull ear and some open road are required.
I use a piggyback ECU(Unichip/WeaponR), also fine tune using the stock FPR for enrichment only.
It takes me on average a week to dial in a setting after an airflow change (ie. porting, larger air cleaner, MAF mods), by the time the factory ecu has re-learned, and adjusted during closed loop operation.
Patience, a gas card, a carefull ear and some open road are required.
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09-27-05, 03:04 AM
#9
Pole Position
Join Date: Feb 2004
Location: International
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SC Model: Soarer 2.5L
Induction: GT40-67 turbo
Fuel: Walbro pump,650cc injectors
Other misc upgrades: 256 in/264 out cams
Tuning components: HKS FCON S fuel/air/timing controller, HKS EVC 5 boost controller, AEM C2DI
Issues: Need loads of cash
Fixes: Nothing major (yet). Coil pack wiring tends to go bad, especially the small connectors.
Recommendations: Pray you have an understanding wife/girlfriend
Induction: GT40-67 turbo
Fuel: Walbro pump,650cc injectors
Other misc upgrades: 256 in/264 out cams
Tuning components: HKS FCON S fuel/air/timing controller, HKS EVC 5 boost controller, AEM C2DI
Issues: Need loads of cash
Fixes: Nothing major (yet). Coil pack wiring tends to go bad, especially the small connectors.
Recommendations: Pray you have an understanding wife/girlfriend
10-11-05, 01:12 PM
#11
Lexus Champion
Thread Starter
Originally Posted by supra dr
Recommendations: know in advance exactly what you want the car to do. ...& build it once.
There is nothing more annoying to you or your installer when you have the car in the shop and have to source out a part. It just takes too much time.
Also pick your fabricator well. There are some that are installers and some that are fabricators. If you purchased an incomplete kit put it in the hands of someone who can actually fill in the blanks or you will never be happy.
04-03-06, 07:14 PM
#12
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Location: Florida
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You should never choose your tuning tool, just by theory... Your tuning tool is only as good as teh tuner, so its a mutli facetted answer. Use the tool your tuner can use. Simply put.
04-05-06, 08:48 AM
#14
Lexus Champion
Join Date: May 2005
Location: Central FL
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Originally Posted by aliga
take it to a trusted shop, and have them blow it up on a dyno. 
seen that a few times around orlando, my buddys RX7 turbo II... twice.
As far as it goes with the 1JZGTE.... to use a ECU that someone can tune in the USA and doesnt require hacking up the harness.. The Power FC seems to be doing a good job so far. After months of reading and asking.. i think thats what ill go with.
