...

I can understand a remap, but upgrade injectors ??

What can an upgraded injector do better, apart spray dispersal perhaps, than that of a standard injector.

Its to do with the flow rate of the injectors!

Latest hybrid mapping from the likes of Unit18 has found 240+ BHP possible on standard injectors ffom what I understand on the hybrid PD150 conversions, just working out what MAF to use as I think the scaling is running out.

Devonutopia upgraded the injectors in his mongrel, i'm unsure if he just upgraded them to the VRS spec or went higher - i'm going to gamble that he went higher :p He may know what you need to know

He already had vRS spec (vRS engine), I also had 'uprated' Kerma injectors for the vRS, had them tested and basically they were fit for the bin, and didnt actually flow a lot more anyhow.

Latest hybrid mapping from the likes of Unit18 has found 240+ BHP possible on standard injectors ffom what I understand on the hybrid PD150 conversions, just working out what MAF to use as I think the scaling is running out.

don't quote me on this but i've read else where standard injectors plus 230+bhp can cause detonation and engine failure or something or other!!!

I have some pd130/pd150 uprated injectors sitting here doing nothing, plus 40% flow rate!

jabbasport offer a cleaning service and data spray logging for them....

i would sell them for £400 as they are

don't quote me on this but i've read else where standard injectors plus 230+bhp can cause detonation and engine failure or something or other!!!

How does a compression ignition engine suffer with detonation?

How does a compression ignition engine suffer with detonation?

found it... this is what i read

Please dont believe the hype about making 270 odd hp on stock nozzles to make 230hp on my hybrid set up (stock nozzles) i had to run 40deg fuel duration. Cylinder pressures are very high and result in pistons cracking.

Edited 7 January, 201115 yr by BigJase88

Ive heard of 260bhp on standard injectors from a well known diesel tuning firm. Just the turbo's and set up most people go for arent up for it.

warwick hunts is running big power, dont know what injectors tho

infact heres his build thread - http://briskoda.net/forums/topic/166081-my-latest-fabia-pics-and-spec-list/page__p__2026046__fromsearch__1entry2026046

Ive heard of 260bhp on standard injectors from a well known diesel tuning firm. Just the turbo's and set up most people go for arent up for it.

Which well known tuning firm is this?

There's interesting information on tdi club about this issue, everyone on there agrees about the limit, it's around 220-230. Plus that sites full of tuners from the states an d Europe.

found it... this is what i read

Please dont believe the hype about making 270 odd hp on stock nozzles to make 230hp on my hybrid set up (stock nozzles) i had to run 40deg fuel duration. Cylinder pressures are very high and result in pistons cracking.

That's not detonation then. More than likely a form of pre ignition.

Yeah I read in various places 230 is a SAFE limit. Could push it more like everything, but who knows what'll happen

Matt

Yeah I read in various places 230 is a SAFE limit. Could push it more like everything, but who knows what'll happen

Matt

I think its larger dependant on the quality of the software. Especially looking at how many overfuerlling smokey maps there are out there, injectors seemt o be doing just fine.

I think its larger dependant on the quality of the software. Especially looking at how many overfuerlling smokey maps there are out there, injectors seemt o be doing just fine.

Also bear in mind tdi sport is an American site and most of the info on there relates to American diesel which is far far behind diesel here, in fact I think it's about 3 below our cetane rating in the uk

And Luke tuning boxes are extremely non precise and I could never recommend one, if you want more power it's big money !

Which well known tuning firm is this?

There's interesting information on tdi club about this issue, everyone on there agrees about the limit, it's around 220-230. Plus that sites full of tuners from the states an d Europe.

Jabba.

As Tech mentions, any smoke is unburnt diesel, if mine can run near on 230bhp, with enough smoke out of the back to make the beijing olympics look like a clear day, im gunna go out on a limp and say, with the correct turbo, and breathing mods, more than 230bhp is possible.

Jabba.

As Tech mentions, any smoke is unburnt diesel, if mine can run near on 230bhp, with enough smoke out of the back to make the beijing olympics look like a clear day, im gunna go out on a limp and say, with the correct turbo, and breathing mods, more than 230bhp is possible.

+1

Jabba.

As Tech mentions, any smoke is unburnt diesel, if mine can run near on 230bhp, with enough smoke out of the back to make the beijing olympics look like a clear day, im gunna go out on a limp and say, with the correct turbo, and breathing mods, more than 230bhp is possible.

Smoke means that there's fuel pre/post ignition, almost waste fuel.

An intresting comment from Bobby Singh, a resepected tuner over on TDI club (From the UK).

"To get a "proper" 200hp from pd 150 nozzles you need to run 34 degree fuel duration. To get my 230hp i had to run almost 39 degree. Theres figures are with stock soi's.

So to get 250 - 260hp its way out of range.

Remember the nozzle might flow 250hp worth of fuel on a test bench but that doesnt mean you can inject that fuel in the given time window. This is exactly why i had to upgrade my nozzle to get where i am."

Oh, Jabba are well renowned for inflated dyno figures. Look at various vag boards! If you want, I'll dig up some experiences of other people, and general opinions.

Edited 8 January, 201115 yr by Friggerpants

All this 'proper' power is indeed fun to read. I know JBS still quote 200bhp max on standard injectors, no matter how many cars, on lots of different dyno's all run more?

Its not hard to work out a rough bhp figure, based on the weight of your car and your 1/4 time.

Mine points to the 225bhp figure. Which is whats its ran on 3 sets of rollers, over 2 years.

Ive also been told, that with water/meth, sorting out the flow rates on the head, and n2o, nearer 300hp should be possible with the correct turbo and manifold, on standard injectors.

Im not too fussed what Jabba say, or dont say. Or what anyone else says too! I know cars with plenty more 'proven' power than mine, running alot slower, so im happy as a pig in sh£t

Edited 8 January, 201115 yr by T. Spark

All this 'proper' power is indeed fun to read. I know JBS still quote 200bhp max on standard injectors, no matter how many cars, on lots of different dyno's all run more?

Its not hard to work out a rough bhp figure, based on the weight of your car and your 1/4 time.

Mine points to the 225bhp figure. Which is whats its ran on 3 sets of rollers, over 2 years.

Ive also been told, that with water/meth, sorting out the flow rates on the head, and n2o, nearer 300hp should be possible with the correct turbo and manifold, on standard injectors.

Im not too fussed what Jabba say, or dont say. Or what anyone else says too! I know cars with plenty more 'proven' power than mine, running alot slower, so im happy as a pig in sh£t

We'll have to agree to disagree, I don't agree that standard injectors can flow over 220 - 230!

I DEFFO don't agree with the 300bhp comment, that's absurd! N20 adds more oxygen to the mix, along with water/meth decreasing intake temp, allowing you colder dense air, along with the turbo + a better designed manifold for better air flow.....so all this air is great, but what are you going to burn with it? There is simply not enough diesel! However who said this? Is it a company? if that's the case for 300bhp, I'll happily sign up!

A story about tuning companies.... Over on the Rover Forum, a friend, Mark (DonnyDiesel), had a Rover 400, with a bigger turbo and bigger injectors, done by a reputable tuning company (i'll Say who, if i'm allowed to Mods?), and was told he was running 193bhp. Happy as Larry, with his dyno print out.

Two weeks later and no further mods since, he goes on another dyno. 148bhp.

Goes back to the original company, another dyno, 190bhp.

Uses a different dyno, well known as accurate with the RX7 club, 153bhp.

He wasn't very happy........Moral of the story? Dynos can be tricked, using various techniques like not securing a car down well enough, 3rd gear runs etc.

Awesome and jabba gave me the same readout.

Morel of the story, I think their calibrated just fine.

Most people keep the standard injectors to keep economy. When I was down at Jabba I saw warick hunts I think, (red fabia) that pumps out around 260bhp on standard injectors.

T-spark, hows the meth kit doin?

warwick hunts is running big power, dont know what injectors tho

standard injectors...

standard injectors...