What injec/chipset for RS2+ power

[Vorsprung durch Technik]

I'm looking for forum advice on what is currently the up to date suitable injector for my upcoming Volvo K24 7400 conversion on the S6. Spec will be custom 3" downpipe,RS2 Evo RS Wagner exhaust manifold, custom intercooler with a suitable chipset,still not sure what to do for chipset or go for a custom map at say Automark. Advice appreciated on this too and with that lot bolted on running at least 350bhp.

I know it's an expensive option to get the head ported and flowed for the small power gains involved but if i were to do this i'm thinking with the set up mentioned would get another 25bhp on top with a very nice flowing head to have around 375 maybe 380bhp.Any injector you recommend needs to be right for the 350 to 380 bhp range.


Your thoughts please chaps.

[andy10v]

If you are using a generic chipset, you will need the injectors the chips are tuned for, eg PRJs AAN K247400 used 440s I think.

If you are getting a live map ask your tuner in case they have a preference.

RS2 injectors would work with the appropriate tuning.

[Rikki Kitto]

A few people on here are running 380 with RS2 injectors

[robo]

A few people on here are running 380 with RS2 injectors

My Rs2 injectors maxed out at 370.

[Vorsprung durch Technik]

Anyone got any suggestions who will be able to supply the right chips for the power and the set up i'm after?

I keep hearing about bosch 440cc injectors,would they be more suitable than a maxed out RS2 one? Would the 440cc injector flow too much or is it the case the ECU decides what flow is required and as long as the injector can accommodate required ecu fuel flow then there would be no difference in fuel consumption between a standard RS2 injector apposed to a 440cc injector at a given speed of for arguments sake 70mph?If you can understand what i'm trying to say?Me learning here.

If you guys recommend Bosch 440cc injectors would these ones be correct?

[newsh]

What injec/chipset for RS2+ power

If you want to buy a chipset then you have to buy the correct injectors for that chipset.
You also have to fit the correct MAP sensor in the ECU and possibly change the R201 resistor. Of course, turbo, manifolds and intercooler etc. need to be correct for that chipset too. There are tried and tested routes like the RS2 + setup which will work pretty well with a generic chipset.

On the other hand, if you're getting a custom map done then the tuner will set the map up to run with the injectors that suit your tune or that he prefers to work with.

Since no two cars are exactly the same the only way to get a "perfect" tune is to custom map on the dyno or in the car.

[Vorsprung durch Technik]

Thanks John. Andy10v asked the question to Bryd 2+ years ago,who also runs the Volvo turbo what chipset he was using but as far as i can tell this wasn't answered.Just been looking.So who would i need to approach.There's the homefries but i always knew i wanted to go this route so who would be able to provide the chipset i would need. Would RS2 chips work for me?

[K Simmonds]

My Rs2 injectors maxed out at 370.

Yeah I thought RS2 injectors were maxed out between 360/370 BHP....Yeah people have had higher numbers but dyno's vary a great deal and some people could be running dangerously lean...

I'm under the impression that Bosch 440's are the best bet for the 350-400 power range but certain tuner's may have their own preference.

The RS2+ Hoffer chip set my 3B is running provides a great deal of torque, he used to sell some cracking Turbo's and software, I wonder if he's got anything for the K24 7400? That's if he's still doing anything relevant as I've not seen him on here for a long time...

Getting the head done isn't a bad idea if you can afford it, making it more efficient will help the turbo spool up a little earlier as well as providing gains throughout the rev range. I think one of the reasons my car come's onto boost so early is the head work done by Brian Rickets way back in 1993 when it had the Nothelle conversion fitted.

[andy10v]

PRJ has a chipset for a k24 7400 with Bosch 440cc injectors and a Bosch 044 fuel pump on an AAN.

http://www.s2forum.com/forum/showthread.php?t=64070

[PRY4SNO]

PRJ has a chipset for a k24 7400 with Bosch 440cc injectors and a Bosch 044 fuel pump on an AAN.

http://www.s2forum.com/forum/showthread.php?t=64070

Something like this ^^^

I was going to suggest you get a Motronic tune from either PRJ or Marc Swanson of EFI Express. They will be able to tailor your tune to the hardware you have, and make some suggestions for some additions/improvements.

[Vorsprung durch Technik]

Thanks Andy. So would i be right in thinking Prj is the best and only way to go as he has the chipset for the Volvo K24 7400? Excuse my ignorance i'm learning here. So if prj's chipset is generic i would need to get the car on a rolling road to get the best out of the chipset/tune of my engine?

Regarding the injectors i think i'll give mark a call at Automark to see what he thinks.

[LHD_Kid]

Newsh's answer is still relevant. Generic means fixed chip set up based on what is written - fixed into the chips. Nothing to set up on a dyno, rolling road. No adjustments. This has a certain set of components in mind with the map written accordingly - kind of best guess and average and keeping within safe limits. Not optimal.
Custom tune is when you make adjustments to the information on the chips in real time - to make it as good as possible for your specific set of components... optimal. You need car, tuner and dyno (or private road) in the same place at the same time for this...

[Vorsprung durch Technik]

Something like this ^^^

I was going to suggest you get a Motronic tune from either PRJ or Marc Swanson of EFI Express. They will be able to tailor your tune to the hardware you have, and make some suggestions for some additions/improvements.

Thanks for that,whilst i was faffing around with my reply i didn't see yours. I think i will need some tailoring as you suggest as many of the tunes on here are based around the standard RS2 exhaust manifold.

I'm thinking the wagner evo rs2 manifold along with a ported and flowed head for maximum easy of flow and efficiency is the way to go for lots of low down down torque and boost as Kit has mentioned.That's the sort of engine i'm after and the reason why i chose the Volvo turbo as it provides just that as it's 10 years newer technology.I'm not after huge bhp just extreme efficiency.

[Vorsprung durch Technik]

Newsh's answer is still relevant. Generic means fixed chip set up based on what is written - fixed into the chips. Nothing to set up on a dyno, rolling road. No adjustments. This has a certain set of components in mind with the map written accordingly - kind of best guess and average and keeping within safe limits. Not optimal.
Custom tune is when you make adjustments to the information on the chips in real time - to make it as good as possible for your specific set of components... optimal. You need car, tuner and dyno (or private road) in the same place at the same time for this...

Custome tune is what i'm after,not sure if my pocket is though . I have a specific set of parts in mind as outlined above and want a tune tailored to those parts for maximum efficiency,plenty low down torque and early boost. So what would need to happen to my edu to obtain what i'm after?

[LHD_Kid]

Custome tune is what i'm after,not sure if my pocket is though . I have a specific set of parts in mind as outlined above and want a tune tailored to those parts for maximum efficiency,plenty low down torque and early boost. So what would need to happen to my edu to obtain what i'm after?

In which case... you need to arrange a date for the tuner and the car and yourself to be wherever you're going to do the mapping...

It would normally (as has been said) be the tuner which specifies what he feels he needs to use to reach the goals for the engine which you have decided...

Good luck with that....