View Full Version : Uprated Maf??
Shock_Xe
09-02-2004, 22:58
Ok, quick Q, Is it worth uprating the maf to that of a S3 or the likes?? Especially if it needs replacing anyway? As they have a bigger housing will any benefits be seen??
I think the actual MAF is the same, just on a different housing.
Shock_Xe
10-02-2004, 10:20
Originally posted by prc
I think the actual MAF is the same, just on a different housing.
I was looking at bigger housing also, thought if ima buy a new MAF might aswell go for biger housing too, Cant be a negative thing!
But there are 2 listed for the S3 1 for the APY engine (£130) and 1 for the BAM engine (£180) and was wondering the difference?
Not sure mate but if it's anything like the TDI's , the larger MAF housing will cost 60% more than the shorter narrower one. Other than that there's no difference.
Your car with think that there is less airflow and less load, so will run more timing, and detonate like hell. Bad idea!
If you're going to get the ecu remaped with the larger maf, then their maybe some minor gains.
Forgot to add. Been there, tried it, and on my standard timing settings where I usually see timing being pulled by 3kw, it was being pulled by 12-15kW. Changed it back prety sharpish
Shock_Xe
10-02-2004, 10:58
Originally posted by GolfTTish
Your car with think that there is less airflow and less load, so will run more timing, and detonate like hell. Bad idea!
If you're going to get the ecu remaped with the larger maf, then their maybe some minor gains.
ahh just the man, Was gonna ask you this, As u may/may not be awar Im booked into Jabba on 27th feb and I wanted to do everything im possibly gonna do before I get there!
Any thoughts mate on the MAF (as in type to go for)
Also considerd injectors but do u think they wil be needed??
Anyone else have thoughts on the above? Quick response apreciated
Mike
ON the k03S, I'd stick with the standard maf. You need a different intake pipe for the turbo to fit the bigger maf, or you have to bodge it.
The standard one is only 5mm diameter smaller than the TT/s3/R maf, and Mikes base files will be based on the standerd sized MAF.
Mines still got the standard MAF on, and reads quite hapily upto 185-190g/sec. If you can get a K03S to pull over 170g/sec you've done very well.
Just buy a new sensor, and you can always sling it in a bigger housing at Jabba, if Mike thinks it'll do you any good. He'll have the bits you need to bodge it.
Injectors? If they're the same size as the golfs, then they should be fine with a 4bar fpr. Should support as much as the K03 can produce. Mine were just topped out on the K03, and I don't think Jabba will give you quite as much boost as I was running (at my own risk)
You should have a nice 240hp+ ibeza by the end of the month
Shock_Xe
10-02-2004, 11:21
Originally posted by GolfTTish
ON the k03S, I'd stick with the standard maf. You need a different intake pipe for the turbo to fit the bigger maf, or you have to bodge it.
The standard one is only 5mm diameter smaller than the TT/s3/R maf, and Mikes base files will be based on the standerd sized MAF.
Mines still got the standard MAF on, and reads quite hapily upto 185-190g/sec. If you can get a K03S to pull over 170g/sec you've done very well.
Just buy a new sensor, and you can always sling it in a bigger housing at Jabba, if Mike thinks it'll do you any good. He'll have the bits you need to bodge it.
Injectors? If they're the same size as the golfs, then they should be fine with a 4bar fpr. Should support as much as the K03 can produce. Mine were just topped out on the K03, and I don't think Jabba will give you quite as much boost as I was running (at my own risk)
You should have a nice 240hp+ ibeza by the end of the month
Thanks for the info! :)
Boost Boost Wise im quite happy running 20+psi, It just depends on where the boost stops making the difference. Im hoping the single pass fmic is gona keep things very cool to allow loads of boost.
Cheers for the help, Normal Maf it is! Will get a quick/short shift instead!
Mike
Shock_Xe
10-02-2004, 22:02
Bad news, monitored block 002 for MAF (that right?) and got 115g/s max and block 003 (wasnt sure if this was MAF) and got 87g/s
I had a bad reading about 4 weeks ago before CAI was fitted (120g/s) and hoped it was a fluke. Looks like it isnt! Suppose it had to go sometime!
From this it gave me a MAX bhp of 110 and 157lbs torque. Does someone want to confirm the MAF for me?
Logs here (http://www.seatcupra.net/forums/attachment.php?s=&postid=308118)
Originally posted by Shock_Xe
Bad news, monitored block 002 for MAF (that right?) and got 115g/s max and block 003 (wasnt sure if this was MAF) and got 87g/s
I had a bad reading about 4 weeks ago before CAI was fitted (120g/s) and hoped it was a fluke. Looks like it isnt! Suppose it had to go sometime!
From this it gave me a MAX bhp of 110 and 157lbs torque. Does someone want to confirm the MAF for me?
Logs here (http://www.seatcupra.net/forums/attachment.php?s=&postid=308118)
Sorry Mike can't confirm it for petrol. Block 3 is correct for diesels though.
block 2 or 3 mike. where it says g/s. Thats the maf. Rag your car in third from 2k to the red line to get a relevent log.
Shock_Xe
12-02-2004, 17:32
Originally posted by GolfTTish
block 2 or 3 mike. where it says g/s. Thats the maf. Rag your car in third from 2k to the red line to get a relevent log.
yeah did do, logged both numbers " & £ and one got 90g/s and the other 115g/s
Mike I looked at the logs, and couldn't find anywhere where you went above 5K rpm
Shock_Xe
13-02-2004, 10:38
Originally posted by GolfTTish
Mike I looked at the logs, and couldn't find anywhere where you went above 5K rpm
ran out of road! So slooooow standard boost!!!! So i need to go above 5k? cause when previously chipped it was upto 5k to get higest reading after that it went down
Mike I didn'rt realise that you were running standard boost.
115g/s is around the 150-160hp mark, so it looks about right.
I'd still run it to the limiter to get a log though.
Shock_Xe
13-02-2004, 14:57
Originally posted by GolfTTish
Mike I didn'rt realise that you were running standard boost.
115g/s is around the 150-160hp mark, so it looks about right.
I'd still run it to the limiter to get a log though.
ahhh right ok, getting the REVO trial soon hopefully, so i can highlight any problems before jabba
Shock_Xe
15-02-2004, 21:08
Bugger it ima go for injectors and 4bar fpr before Jabba, I want to be safe and know i hgave done everything i can and dont want that niggly thought of "What if i had done....."
Anyone have any ideas which injectors would suit and £££ and fitting?
GolfTT?
Will ring jabba anyway
Have a chat with kev, and he may be able to give you the bosch part number for the ones I'm using. Stick with the 3 bar fpr though. Heed bills warning.
Shock_Xe
16-02-2004, 09:29
Originally posted by GolfTTish
Have a chat with kev, and he may be able to give you the bosch part number for the ones I'm using. Stick with the 3 bar fpr though. Heed bills warning.
So you using uprated injectors but not fpr?? Wont the fpr max out therefore not getting an improvement?
The fpr does exactly what it says. It regulates fuel pressure in the fuel rail.
The injectors are nozzles, so at 3 bar flow less than at 4 bar for a set period of opening.
At max required flow (max power) the pump will have to work harder to maintain 4 bar than 3 bar, so if you can get injectors with the required flow at 3 bar it's better for the pump.
Shock_Xe
16-02-2004, 10:25
Originally posted by GolfTTish
The fpr does exactly what it says. It regulates fuel pressure in the fuel rail.
The injectors are nozzles, so at 3 bar flow less than at 4 bar for a set period of opening.
At max required flow (max power) the pump will have to work harder to maintain 4 bar than 3 bar, so if you can get injectors with the required flow at 3 bar it's better for the pump.
got it! So would upgrading the injectors still make an improvement?? As it would be more efficient and less stressed right??
Shock_Xe
16-02-2004, 16:09
Originally posted by GolfTTish
Got it in 1!
You got porsche GT3 injectors mate!!!! How much did they cost?
saying that i got the porsche etka catalogue here :)
ibizacupra
16-02-2004, 16:34
For ref I ran RS4 injectors initially.... @ 4bar mind you. Was good for 320-340bhp back then.
Spray pattern is important as well as actual fuel delivery....
(eg Don't expect even running if using agricultural cossy type injectors)
Mike
Yes I believe they are off a gt3. Not got a price on them yet, but around £210+vat for a set.
Car runs fine with a rock solid tickover. I got 1/2 hours tweaking yesterday and the cars a lot smoother to drive, with most of the boost spikes are now gone and fueling is a bit closer.
The injectors don't go above 80% duty cycle with a 3 bar fpr, but as bill says, atomisation is important, and at 1.5bar boost, you only effectively have 1.5bar across the injectors. Going to try the 4 bar fpr when the car gets the full treatment.