anyone supercharged? Q
11-15-02, 10:55 PM
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anyone supercharged? Q
Do all SC kits from SRT have an ECU piggy back? Or does the stock ECU learn throught he Mass air flow, O2 sensors... on the low boost model?
Thanks
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11-16-02, 01:55 AM
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supercharged with no ECU change...
This what I posted earlier in another thread about my S/C 3.4L Toyota Tacoma...hope this helps...
The largest problem that most folks running forced induction come into is a leaning out condition that causes pre-detonation and a the dreaded 'ping' (this sounds like marbles in a coffee can).
I run a standard 7.5 lb boost with my TRD supercharged Toyota Tacoma (3.4L). This bolt on system gives great power, but has shown some faults. An indepth discussion is available on Gadget Online.
Despite Gadgets maddening array of add ons, the best combination to manage the new boost has turned out to be the TMC 1.1 from Split Second which using only a very slight amount of engine timing retard has been quite effective. I run this in combination with a 160 TRD thermostat (which acts to also retard the timing, but I had the thermostat in first and then added the TMC which is fully adjustable) and have seen improved gains and a complete elimination of the lean out condition that can occur (i.e. pinging). I run this without any modification to my ECU (well, other than the TMC 1.1).
All newer FI Toyotas have a learning ECU. There is no reason for swapping out your ECU unless you are getting into extreme boost conditions or looking for a race car that will perform only at high RPMs and run like crap at lower RPMs and slower driving. The right thing to do is to pull the fuse for the engine ECU for about 30 minutes and pop it back in...the computer will reset and start relearning again. This is standard operating procedure for all S/C installations.
Other folks have completely upgraded their fuel system--including adding a Boost-a-pump (or completely replacing their fuel pump), upgrading the fuel pressure regulator, and the replacing fuel injectors with 305cc injectors (this is for the 3.4L engine). Lots of folks have had good luck with this pricey option as well.
Anyway thats my two cents...I drive the Tacoma nearly every day to work, yet it is easily a high 14 second 1/4 miler, this with stock 3.90 gears, and 32" BFGs...The bottom line is that an ECU upgrade is hardly neccessary except in the most extreme circumstances...
later
Bryan
The largest problem that most folks running forced induction come into is a leaning out condition that causes pre-detonation and a the dreaded 'ping' (this sounds like marbles in a coffee can).
I run a standard 7.5 lb boost with my TRD supercharged Toyota Tacoma (3.4L). This bolt on system gives great power, but has shown some faults. An indepth discussion is available on Gadget Online.
Despite Gadgets maddening array of add ons, the best combination to manage the new boost has turned out to be the TMC 1.1 from Split Second which using only a very slight amount of engine timing retard has been quite effective. I run this in combination with a 160 TRD thermostat (which acts to also retard the timing, but I had the thermostat in first and then added the TMC which is fully adjustable) and have seen improved gains and a complete elimination of the lean out condition that can occur (i.e. pinging). I run this without any modification to my ECU (well, other than the TMC 1.1).
All newer FI Toyotas have a learning ECU. There is no reason for swapping out your ECU unless you are getting into extreme boost conditions or looking for a race car that will perform only at high RPMs and run like crap at lower RPMs and slower driving. The right thing to do is to pull the fuse for the engine ECU for about 30 minutes and pop it back in...the computer will reset and start relearning again. This is standard operating procedure for all S/C installations.
Other folks have completely upgraded their fuel system--including adding a Boost-a-pump (or completely replacing their fuel pump), upgrading the fuel pressure regulator, and the replacing fuel injectors with 305cc injectors (this is for the 3.4L engine). Lots of folks have had good luck with this pricey option as well.
Anyway thats my two cents...I drive the Tacoma nearly every day to work, yet it is easily a high 14 second 1/4 miler, this with stock 3.90 gears, and 32" BFGs...The bottom line is that an ECU upgrade is hardly neccessary except in the most extreme circumstances...
later
Bryan
11-16-02, 02:37 AM
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Any Ecu's with SRT's F/I? YES!
All of SRT's forced induction products are are packaged with a piggyback ECU. Hope this clears any confusion that you may have had regarding our products.
11-16-02, 11:21 AM
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DR Rick Check your PM
By the way I am WAY TOO RICH after 4200 RPM NOT lean.
480cc injectors.
APEXi SAFC doesn't work with SC I gained 25hp by taking it off.
BY way too rich I mean under 10 in the curve. it goes from 14 to 9 from 4200 to 4300rpm. Mo had the same issue I read however he made an ECU to fix the problem. I am going to try the greedy e-manage I think and see if that will help??
By the way I am WAY TOO RICH after 4200 RPM NOT lean.
480cc injectors.
APEXi SAFC doesn't work with SC I gained 25hp by taking it off.
BY way too rich I mean under 10 in the curve. it goes from 14 to 9 from 4200 to 4300rpm. Mo had the same issue I read however he made an ECU to fix the problem. I am going to try the greedy e-manage I think and see if that will help??
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