Blitz Access ecu

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hardcoreep

Member +
Thank u for posting that. I lost my copy a while back when my PC chrashed. It debunks the theory some people seem to have on this site that ECUs dont adjust. It cant adjust perfectly because its usually not programmed to do so. However fuel delivery is calculated at maximum needs for that set-up. So the max duty cycle is goind to be based on the expected a/f ratio for the modifications expected, thus a K1 programmed Access will run very rich if you try and use it on a stock car, or even a mildly modified one. The ECU will trim, but only as far back as the percentage allowed by the code.
 
JasonGlanza

JasonGlanza

Lifer
but it will not be capable to adjust to a much bigger turbo and mods either (big power), they were mapped to a certain point to be run with a K1 turbo that is very similar to a Hybrid CT9. There are many out there using it on stock turbo and running gd! From what i've seen its much pointed to those wishing to be around the 200-220bhp with the right mods!
 
H

hardcoreep

Member +
but it will not be capable to adjust to a much bigger turbo and mods either (big power), they were mapped to a certain point to be run with a K1 turbo that is very similar to a Hybrid CT9. There are many out there using it on stock turbo and running gd! From what i've seen its much pointed to those wishing to be around the 200-220bhp with the right mods!
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Let me clarify and tell my experience.

I've seen up to 300+whp on these ECUs, this is because the ECU doesn't techically know what size injectors you're using. What its doing is either using a preset duty cycle or looking for a/f feedback. Therefore if you have a turbo that requires X amount of fuel, all you would technically need are those size injectors. Throw in a piggyback of some sort and it will work fine and support whatever mods you have.

I cannot say that they will never adjust perfectly because during one of my tests my Access adjusted perfectly to my td04. However, more telling was that the a/f ratio was spot on for the bigger turbocharger while using a CT9 a/f were richer by two whole points.

On the other hand I've seen where a Access wont keep up with a K26 powered 5E and had to be updated to a Access Pro, at which point it couldn't fuel any other lower levels of modifications. So stock EPs running a K1 program on a stock CT9, might be possible, but not rather efficient.
 
A

ALaN

Member +
Hardcore, when you say access pro I take it your refering to the access super computer over the lesser (pre mapped) direct access? As these are the only 2 I've ever heard of.
If it's another variety do you have any info on them?
Alan
 
D

DavidAshton

Member +
hardcoreep said:
So stock EPs running a K1 program on a stock CT9, might be possible, but not rather efficient.
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This how my k1 mapped ecu ran a ct9, i think its fueled efficiently apart from being rich top end but im led to believe they all richen the top end

DSC00251.jpg
 
H

hardcoreep

Member +
1: For above, where there supporting modifications other than the CT9.

2: There are several Blits ECUs. There is the Access which is for light mods and can be reprogrammed by Blitz for K1 duty. There is the Access II and the Access Pro, for the K24 and K26 Blitz turbocharger kits respectively. If you have the money and haven't broken the seals on your Access you can send it back to Blitz to be changed to either settings. I've sendt back an Access to be converted to a Access Pro for a friends.
 
Ted

Ted

Member +
Texx said:
-20% duration trim from a 330cc injector would theoretically provide the same volume of fuel as a 264cc injector at the original duration. When in closed loop an additional -10% trim is available, so theoretically during a warm idle condition the ECU is able to trim a 330cc injector to provide the same volume of fuel as a 237.6cc injector at the original duration. That would suggest the ECU could trim enough fuel to prevent an overly rich mixture during warm idle and light throttle conditions.

The concern then would be whether the AFR would become too lean during hard acceleration after the ECU has learned long fuel trim to -20%, as the ECU will not be making any ± short fuel trim adjustments using the feedback from the O2 sensor as it will have switched to open loop. So that has the potential to result in an open loop mode condition where 330cc injectors are fitted, but the engine is being delivered the volume of fuel equivalent to that of 264cc injectors.

However, saying that, I think it's extremely unlikely the ECU would ever see the need to learn long fuel trim at -20% just from a small increase in injector size and it's also possible the modified ECU's may ignore any negative fuel trim adjustments when in open loop mode to avoid a lean AFR.
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that makes sense, however over here people have tried 330s with jam /blitz ecus and the car didnt run well at all.
 
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ALaN

Member +
hardcoreep said:
1: For above, where there supporting modifications other than the CT9.

2: There are several Blits ECUs. There is the Access which is for light mods and can be reprogrammed by Blitz for K1 duty. There is the Access II and the Access Pro, for the K24 and K26 Blitz turbocharger kits respectively. If you have the money and haven't broken the seals on your Access you can send it back to Blitz to be changed to either settings. I've sendt back an Access to be converted to a Access Pro for a friends.
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I've seen ones that just say direct access on them and mine is an access supercomputer never seen the other ones but it's good to know there out there.
I'm guessing these ecus were originally part of the blitz turbo kits?
 
JasonGlanza

JasonGlanza

Lifer
so there are more different ecus than the basic Access one ? and if you send the ecu serial number to Blitz, can they identify for what was mapped that ecu?
 
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H

hardcoreep

Member +
Yes on both fronts. I got mine with the manual. On the cover it says Access, Access II and Access PRO. If you call them with the serial number they can identify the ECU and its contents, however, they will not reprogram it if the seals are broken.
 
thechomper

thechomper

Member +
i have'nt read the full thread but i have a jam ecu ,i am currently running a hybrid at 1.2 bar and it is over fueling at the lower rpm in and around the 9 mark and then at about 4000rpm changes to around 11,i imagine that the ecu was set up orginally for a k26 of td04 turbo ,the believe that they are self learing in my opinon is pure shite,i have bought a emange ultimate and will be changing soon when i can afford to buy bigger injectors ,fuel pump and greddy map sensor, but in fairness the ecu has served me well and has'nt let me down at all, i am just after a finer tune .when i am selling it i will be recommending it for a bigger turbo then a hybrid
 
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