andypandy
Well-known member
AndyPandys Sender Mod, can give VAG HP at high rev. MovieUpdated!
Content: Originaly seen as a problem, Sender construction can cause drop of HP. Have seen this issue before.. but not in the state as an Power Enhancement thing.
Sample Car:
Golf 110HP -00
No EGR valve-straight pipe, "Evry modded" realhard, through a simple pressure switch 0.7bar, Simple Diode mod MAP to adjust boost to 1.3bar (18psi), ripped snowscreen, Changed hose before and after stock VNT15 to bigger, have a hole in my cat (done with a crowbar/tapping bar from behind). Intake manifold cleaned.
For short.. I take the max out of stock parts!
Mods less than 100$.
Otherwise strict stock, no box, no chip, no changed exhaust, no nozzles.
The story:
My car has always had air bubbles in the fuel line, but I have not taken any serious issue about it because my feeling was that the car was as good as it could at this level.
(It was unbelievable slow back when I got it, totally full of carbon/soot, snowscreen clogged)
After driving a year+ my feeling was that the car was not that fast as before. Power in the bottom.. still short squeak in second gear hard shifting, but loose at middle/higher rev.
Was the turbo finally going to go to the "long fields" J ?
After a couple of weeks the car loose more and more, not that many HP left over 3500r as before, but then… I realise that the bubbles had increseed significantly! The pump was starwing for fuel all the time!
After investigation I found the trouble… leaky "T" O-rings at the filter… changed filter, O-rings, but the bubbles only get back to the "original state", but all my "initial" power was back!
Now I was in the going mode… if this increese of air/bubbles get the hp fly away like that.. then.. I want to get rid of them all!, just to see if there should be any change of all.
I noticed that there was a significant dullness/inertia when I suck.. *smile*… in the line from the fueltank…! That lead me, after a while, to the fuelsender box inside the fueltank… and a thread here about an known trouble in extreme low temperatures that there is a narrow valve in the sender box hose that don’t is to be really neded in VAG cars, causing low HP or get the car to stop totally in cold weather, diesel with higher viscosity get the problem even worse. And this is on stock cars!
VAG has sent out an recall/updated sender module that has been replaced in some cars. If your sender number ends with "H" don’t bother this thread.
The valve construction in it self.. is really a big restriction in flow in the fuel line! And has a hose clips on top where air can get in in extreme underpressure.
In normal conditions, this is good enough… but when you squeese all out of this system with chips, nozzles, etc.. (or like I am with stock parts) it's going to be an issue for sure.
This is the answer to why some install liftpumps… and get cars that behave way better afterwards.
I Drilled out the valve carefully.
In my car, all bubbles went away after a day of driving, totally!
And the power… not any change in low rev… or middle… but hey! What a change 3800r and above!!!
I have now power to the redline out..
A little smokey all the way out 5000r now!
(in fact to much smokey.. had to adjust my "evrymode potentiometer" down a bit yesterday)
My "butdyno" says like 5-12hp on top in this car.
I know now, that I probably don’t need to buy a liftpump… even if I install R520 nozzles with a vnt2052v in the future.
This car is now quite fast, and for a lousy diesel car, with almost stock parts.. real fast!
(this week I go "even" with a Skoda Octavia RS out in 4:th… when he realize that he could'nt outrun..?! … this… dirty.. blue.. diesel golf… ***?? He he JJ)
If this tip is helping you to find high HP:s..?
I don’t know… It's depending on how much hp you are taking out of your VP37 TDI today,
but it made a change for my TDI car.
Stock car = don’t bother this thread
Chip/box hard.. other nozzles/turbo = give it a try!
Pictures/Instruction:
Have 15 minutes over?
Max half tank filled?
Passenger back seat
Do your number end with an "H".. ok.. mount back the screws
lets go
Loose lines
Take it out
Yepp, does'nt seems good
..from behind
Drill it out carefully, drill, blow, drill, blow.. all has to come out, the spring, the valve... all stuff inside. look twice!
Mount back... no air bubbles for me.
Neccesary tools
Mount back.. and grease those fitting also so no air can get aside.
Content: Originaly seen as a problem, Sender construction can cause drop of HP. Have seen this issue before.. but not in the state as an Power Enhancement thing.
Sample Car:
Golf 110HP -00
No EGR valve-straight pipe, "Evry modded" realhard, through a simple pressure switch 0.7bar, Simple Diode mod MAP to adjust boost to 1.3bar (18psi), ripped snowscreen, Changed hose before and after stock VNT15 to bigger, have a hole in my cat (done with a crowbar/tapping bar from behind). Intake manifold cleaned.
For short.. I take the max out of stock parts!
Mods less than 100$.
Otherwise strict stock, no box, no chip, no changed exhaust, no nozzles.
The story:
My car has always had air bubbles in the fuel line, but I have not taken any serious issue about it because my feeling was that the car was as good as it could at this level.
(It was unbelievable slow back when I got it, totally full of carbon/soot, snowscreen clogged)
After driving a year+ my feeling was that the car was not that fast as before. Power in the bottom.. still short squeak in second gear hard shifting, but loose at middle/higher rev.
Was the turbo finally going to go to the "long fields" J ?
After a couple of weeks the car loose more and more, not that many HP left over 3500r as before, but then… I realise that the bubbles had increseed significantly! The pump was starwing for fuel all the time!
After investigation I found the trouble… leaky "T" O-rings at the filter… changed filter, O-rings, but the bubbles only get back to the "original state", but all my "initial" power was back!
Now I was in the going mode… if this increese of air/bubbles get the hp fly away like that.. then.. I want to get rid of them all!, just to see if there should be any change of all.
I noticed that there was a significant dullness/inertia when I suck.. *smile*… in the line from the fueltank…! That lead me, after a while, to the fuelsender box inside the fueltank… and a thread here about an known trouble in extreme low temperatures that there is a narrow valve in the sender box hose that don’t is to be really neded in VAG cars, causing low HP or get the car to stop totally in cold weather, diesel with higher viscosity get the problem even worse. And this is on stock cars!
VAG has sent out an recall/updated sender module that has been replaced in some cars. If your sender number ends with "H" don’t bother this thread.
The valve construction in it self.. is really a big restriction in flow in the fuel line! And has a hose clips on top where air can get in in extreme underpressure.
In normal conditions, this is good enough… but when you squeese all out of this system with chips, nozzles, etc.. (or like I am with stock parts) it's going to be an issue for sure.
This is the answer to why some install liftpumps… and get cars that behave way better afterwards.
I Drilled out the valve carefully.
In my car, all bubbles went away after a day of driving, totally!
And the power… not any change in low rev… or middle… but hey! What a change 3800r and above!!!
I have now power to the redline out..
A little smokey all the way out 5000r now!
(in fact to much smokey.. had to adjust my "evrymode potentiometer" down a bit yesterday)
My "butdyno" says like 5-12hp on top in this car.
I know now, that I probably don’t need to buy a liftpump… even if I install R520 nozzles with a vnt2052v in the future.
This car is now quite fast, and for a lousy diesel car, with almost stock parts.. real fast!
(this week I go "even" with a Skoda Octavia RS out in 4:th… when he realize that he could'nt outrun..?! … this… dirty.. blue.. diesel golf… ***?? He he JJ)
If this tip is helping you to find high HP:s..?
I don’t know… It's depending on how much hp you are taking out of your VP37 TDI today,
but it made a change for my TDI car.
Stock car = don’t bother this thread
Chip/box hard.. other nozzles/turbo = give it a try!
Pictures/Instruction:
Have 15 minutes over?
Max half tank filled?
Passenger back seat
Do your number end with an "H".. ok.. mount back the screws
lets go
Loose lines
Take it out
Yepp, does'nt seems good
..from behind
Drill it out carefully, drill, blow, drill, blow.. all has to come out, the spring, the valve... all stuff inside. look twice!
Mount back... no air bubbles for me.
Neccesary tools
Mount back.. and grease those fitting also so no air can get aside.
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