General > Product Reviews
Autotech HPFP with Revo Stage 1
Marshall:
I ran APR stage 2 software with original hpfp and the car performed well.
But as Andrew says when APR had the sale I bought a APR hpfp, I haven't had my map adjusted but the car feels much much stronger from 4000rpm upwards.
The first drive after fitting I found a slight improvement but after the car had done a about 100 miles the improvement increased quite noticeably.
S3Power:
Hello people! :happy2:
I have an Audi S3 (2007) BHZ and I just remap with Revo (Stage 1)... Settings B7 - T4 - F9.
I made a log's and this is the result with the current fuel pressure (channel 230).
I have the same problem!
The solution is to upgrade the fuel pump? it may be because of the tank fuel pump?
I'm losing power? :confused:
KRL, when you put the piston kit Autotech, without touching the settings in the car improved means?
Regards :drinking:
KRL:
Merry Christmas and Happy new year all!
Not been on here for a while and have moved on to different things car wise but will try to answer your questions as best I can although I may be a bit rusty....
--- Quote ---did you got extra performance with the same settings or after tweaking settings?
--- End quote ---
This is very dependent on have aggressive your map is. If you are running the stock map then no I don't think you will feel much benefit as if I remember correctly the OEM HPFP does not have problems supplying enough fuel for stock boost levels.
If you are running a non adjustable stage 1 map it will depend on how aggressive the fueling and and boost is. A good tuner will have will have logged this when installing the map and ensures the settings are not too aggressive for the OEM hardware. Therefore I would say you may feel some benefit and the best way to know this would be to log your rail pressure and see if the OEM HPFP is keeping up - if it keeps up then no you will not feel much benefit, if it does not keep up then yes you will feel a benefit :happy2:
If you are running an adjustable map like for example REVO were you can adjust the boost, fueling and timing then yes you will get noticeable gains from this mod as you will be able to fine tune the settings to take advantage of the extra capacity the uprated HPFP delivers.
--- Quote ---do you have logs before and after pump upgrade apart of the new rail pressure with the same settings? differences in specified boost or other parameters?
as I suppose the target lambda should be the same and the actual lambda reached target lambda
--- End quote ---
Sorry but I've deleted all my logs now.
--- Quote ---PS: I understand that this was in a S3 TFSI stage 1, right?
--- End quote ---
Thats right, it was a great car :smiley:
--- Quote ---my doubt is:
in a stage 1 car that runs always smooth, reach specified boost, reach specified lambdas despite the fact there are differences in rail pressure, may achieve any improvement if reaches the specified 130 bar always?
--- End quote ---
If the rail pressure is not met the most likely scenario is that you will start to run lean and therefore hotter. If things get too hot the ECU should start to take protective measures and begin to hold things back (like boost) to cool the engine down.
--- Quote ---Hello people! happy2
I have an Audi S3 (2007) BHZ and I just remap with Revo (Stage 1)... Settings B7 - T4 - F9.
I made a log's and this is the result with the current fuel pressure (channel 230).
I have the same problem!
The solution is to upgrade the fuel pump? it may be because of the tank fuel pump?
I'm losing power? confused
KRL, when you put the piston kit Autotech, without touching the settings in the car improved means?
Regards drinking
--- End quote ---
This is a prime example of why I upgraded the HPFP at stage 1! My advice to you would be to take the boost down to 5 or 6 and re-log the rail pressure to see which setting the OEM HPFP is able to keep up with. If you just upgrade the HPFP and don't change the settings then yes you should see the rail pressure keeping up. Unless of course the problem is caused by something else. I don't think it would be the tank fuel pump as if it was I would not expect to see the rail pressure meeting requested at the higher end of the rev range. It could however be caused by something like cam follower failure and you would no that when removing the OEM HPFP.
On a side note if anybody was wondering why the OEM HPFP can keep up at higher revs but not in the mid range it is because at higher revs the cam will be working the pump faster and therefore increasing its ability to meet the requested rail pressure. In the mid range the OEM pump does not have enough fuel delivery capacity to keep up where as uprated pumps do.
Hope this helps :smiley:
berto:
--- Quote from: KRL on December 28, 2012, 09:56:36 am ---Merry Christmas and Happy new year all!
Not been on here for a while and have moved on to different things car wise but will try to answer your questions as best I can although I may be a bit rusty....
...
If you are running an adjustable map like for example REVO were you can adjust the boost, fueling and timing then yes you will get noticeable gains from this mod as you will be able to fine tune the settings to take advantage of the extra capacity the uprated HPFP delivers.
...
If the rail pressure is not met the most likely scenario is that you will start to run lean and therefore hotter. If things get too hot the ECU should start to take protective measures and begin to hold things back (like boost) to cool the engine down.
...
This is a prime example of why I upgraded the HPFP at stage 1! My advice to you would be to take the boost down to 5 or 6 and re-log the rail pressure to see which setting the OEM HPFP is able to keep up with. If you just upgrade the HPFP and don't change the settings then yes you should see the rail pressure keeping up. Unless of course the problem is caused by something else. I don't think it would be the tank fuel pump as if it was I would not expect to see the rail pressure meeting requested at the higher end of the rev range. It could however be caused by something like cam follower failure and you would no that when removing the OEM HPFP.
--- End quote ---
Hi KRL! nice to see you here, it looks you received my message :)
merry christmas too
more specific question is, did you try these 'better settings' that you used with the autotech with the OEM piston? these settings with OEM piston caused any error?
As I said, I have doubts because as the pressure drops, the lambda matches the target lambda (channel 031), even actually it's a little bit richer than target lambda.
We have to take in account that the demanded 130bar it's always the same for stage 1 or 2+ but the requested fuel flow isn't the same. This is why if you down the boost will request even less fuel flow and will raise rail pressure for sure, but I think the main parameter to take care are the lambda values.
S3Power:
Thanks KRL!
I have remap the car with Revo (Stage 1) and with Boost settings = 9, Timing = 4 and Fuel= 9.
If low boost value you think the pressures reach defendants? Example B=5 or 6?
The car is able to maintain stock 110b requesting the ECU.
If I change the value of the fuel to 7 improve something?
Regards.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version