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  1. H

    water/methanol injection

    Sorry but this is not the case. The purpose of an intercooler is to lower air charge temperature and on a turbo charged petrol engine 10 deg.C. equates to approximately 3% power so if you are running at 30 degC. ACT and can reduce that to 20 deg.C on a 400 bhp engine at 30 deg.C. you will have...
  2. H

    Air/Fuel Meter

    Great piece of kit. I use both an LM2 and LM1 so the older LM1 is now for sale. You can buy new from Innovate in the U.S. or seek out stokists who will give you a discount.
  3. H

    water/methanol injection

    I have experience of water methanol injection on both turbocharged diesle and petrol engines. Injected it is used 50:50 water to methanol. A high pressure pump injects the fluid through a nozzle into the air flow from the intercooler to the inlet manifold. On a 2 litre Subaru flat four I produce...
  4. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Yes. There are some big power diesles about. The VAG guys have been at it for some time so the modification route is fairly well marked out and off the shelf parts are relatively easy to obtain. The 1.9 Fiat engine as fitted to Vectras, Astras,Saabs, Cromas, Alpha Romeos is not as well developed...
  5. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Cheers mate. If there is anything you want to know about specifically I can share my experience with you but some times I don't get on here for a few days.
  6. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Thanks for the information. In every day trim the car is running the 279 bhp/437lbs ft map with water methanol. I did nothing with the injectors until around the 250 bhp bracket but remember I also had water methanol injection assisting power development. (10-18 bhp subject to how it was...
  7. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Interesting that Cummins are doing this too. I suspect a lot of diesel manufacturers will go down this route in the future but obviously they need experience in the field for such a radical change. Why do you think the O/E pistons are OK beyond 280 bhp and greater boost than I am running...
  8. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    I have already been offered custom rods and pistons but the cost is prohibitively expensive. I also note that the latest development pistons for BMW, Mercedes and others are actually steel items not weighing any more than the aluminium counterparts because they are thinner. If you were to go...
  9. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Thanks for that T9. Your views are different to those of the local Saab dealers or at least a couple of their mechanics. My only experience on a Saab Twin Turbo was that there was a bit of a step in pull when the second turbo came in higher up the rev range. This has also been my experience...
  10. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    With latest turbo after mapping. In February this year at a rolling road day the car did 268 bhp/437 lbs.ft. On the first visit to RS Tuning February 2011 the car did 216 bhp. All mapping over the last 14 months at RS Tuning, Leeds.
  11. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    For me that is too much work and complication for not very great gains. The space available is a major consideration and why run 2 turbos when one will do? The reason for running 2 small turbos is no lag and immediate spool but we are only dealing with a four cylinder engine so I don't think...
  12. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    So far all I have done with the 1.9 CDTi manifold and exhaust housing is port it and I think I have gone as far as I possibly can using the original 17/49 turbo as a base. I have just fitted another incarnation of the same turbo which will be mapping soon and the results, good or bad, will be...
  13. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    I think there is a bit more to come. I will know mid June. The turbo fitted last Wednesday spools even quicker but I have no idea as to ultimate power until it is mapped so there is a delay. My experience and within the mods I have done and relying only on RS Tuning rollers to keep...
  14. H

    Progress on 150 CDTi Engine.

    http://www.torquecars.com/forums/f134/tuning-bits-vectra-c-1-9-cdti-sri-150-a-16350/
  15. H

    engine re maps

    Speak to Pat Herborn at ScoobyClinic or the owner Kevin Knight. They can Ecutek remap your M/Y 2000 ECU. This pre-supposes that it is an M/Y 99-00. If it is prior to that date you will need an aftermarket ECU or board which can be specifically mapped to your car. They usually do this on their...
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    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Update as at 19 May 2012. In February 2011 the car attended a rolling road day at RS Tuning, Leeds, where it produced 216 bhp and 375 ft.lbs. The car has water methanol injecting just before the inlet manifold. This is a 2 stage system from Snow Performance in the US. Stage 1 is at medium...
  17. H

    PCD chart

    Very useful. Thankyou.
  18. H

    Diesel remaps tech info

    The requirements for mapping a diesel will vary from say a VAG diesel unit to a common rail unit such as the 1.9 Fiat CDTi as used on SAAB, Vauxhall, GM/Opel, Fiat and Alpha Romeo. On the common rail engine the following perameters can be adjusted for best power and earliest spool but with...
  19. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    The oil breather mod ensures there is no oil mist present. The lack of throttlebody and hence no vacum ensures there is very little EGR, if any. Further, the blanking plate, even with a hole in it ensures that even if there were any EGR it is very substantially reduced. On top of all that I...
  20. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Because the manifold and exhaust section of the turbo are one piece and because of the space constraints between the engine and fans / water radiator I am not keen to try to make a new manifold which could be a great improvement before I determine exactly what turbo I would want to use. The...
  21. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Here is the 17/56/60 which will be fitted after I max out the 17/49/56, hopefully during mapping w/c 22 January.
  22. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    OOPS. Didn't mean to post these but here is the inlet manifold showing the 8 ports four of which have flaps which are inclined to jam. Now that I have a spare inlet manifold because I replaced the original I am removing the flaps, plugging the spindle holes and doing minor porting work on the...
  23. H

    Tuning bits. Vectra C 1.9 CDTi SRi 150

    Much has happened since October. It appears the current map sensor will allow the car to run at the target 1.9 bar. A 3 bar map sensor is 3 bar absolute and allows 2 bar operation so the map sensor issue may not be the problem I previously thought. I am informed that maxing out the MAF...
  24. H

    Tuning tips: Induction kits

    What a load of bollocks. The petrol engine runs most efficiently as with all engines at Lambda with petrol this is 14.5:1 AFR. Lambda varies from fuel to fuel so if you run methanol for instance you will run a lower AFR. 14.5:1 AFR is the petrol cruising Lambda but under load the engine...
  25. H

    VNT on a mechanical turbo diesel....

    My experience on a petrol is that the water methanol kit greatly reduces EGTs so it adds safety. It did not add a lot of bhp, perhaps 12 bhp around 400 bhp (the 2 litre turbo charged engineis now 422 bhp), however, the big advantage was that with the reduced EGTs and use of water methanol I was...
  26. H

    VNT on a mechanical turbo diesel....

    Update: As I have a spare inlet manifold for the Vauxhall 150 engine I have now removed the throttle flaps and need to plug the holes before porting the manifold where I plug it and make light porting alterations on the manifold generally which appears very well designed. Yesterday I...
  27. H

    VNT on a mechanical turbo diesel....

    The solution is simply to put on a BOV in proximity to the throttle body just before the inlet manifold. The 4 flaps referred to above are closed at low RPM to give torque as above and open gradually to wide open depending on throttle position and engine load. Having super glued these flaps...
  28. H

    VNT on a mechanical turbo diesel....

    This is not a problem I anticipate and there is no turbo stall at present. If it were to raise its head and become an issue with the bigger cover and wheel, it is easy to deal with.
  29. H

    VNT on a mechanical turbo diesel....

    The Vauxhall/Opel/SAAB/Alpha/Fiat 1.9 engine actually has 8 runners in the inlet manifold and four of these, one for each cylinder, have a swirl flap. The inlet manifold itself has a single butterfly throttle body. The purpose of this is probably to allow the engine to develop vacum at stages to...
  30. H

    VNT on a mechanical turbo diesel....

    Just be aware that many modern diesels actually run a throttle flap.
  31. H

    VNT on a mechanical turbo diesel....

    I fully agree and I am having great fun with my Wife's 150 Vectra. Originally the power band was about 1650 rpm to 4000 and now it is about 1800 to 4800 having gone with relatively little effort from 150/236 to 230/335. Part of the fun is blowing Audi Coupes and BMWs into the weeds plus your...
  32. H

    VNT on a mechanical turbo diesel....

    Just found time to look at this thread for the first time. Just to put this into perspective, my 2 litre Subaru STi 3 Wagon produces 422 bhp and 400 ft. lbs and that is a daily driver. My WRX Wagon MY95 produces 420 bhp and about 380 ft.lbs. Again 2 litres. My 2 litre STi 6 Wagon on race...
  33. H

    Hi guys.

    Cheers
  34. H

    VW LT 35 turbo output.

    Workload has been such that this is a late response and I expect I will have to work for most of the weekend. Correct. No-one has been able to map out the EGR and one prominant mapper said that getting rid of the EGR was too much bother. I suspect it is relatively easy to do on the 16+ ECU...
  35. H

    VW LT 35 turbo output.

    Carrying a gas cylinder about is a no-no as far as I am concerned as it takes up space and adds weight. A small bottle of nitrous oxide for a bit of fun or just for a laugh :) might be tolerated. The extra performance from the EDC 16+ is I believe attributed to the greater ECU processing...
  36. H

    VW LT 35 turbo output.

    I have been told the EDC16+ equipped Vectras with DPF have more tuning potential but I am not sure I believe that. I am not interested in LPG as the car is a load carrier and I can't be bothered with a cylinder but I have also thought of nitrous oxide (just for a laugh, pun intended) and the...
  37. H

    VW LT 35 turbo output.

    MY06 Vectra CDTi SRi. Bosch EDC16. This vehicle was just prior to the DPF equipped cars which had the EDC16+.
  38. H

    Turbo blankets

    It is common practice on Subaru engines to wrap the exhaust manifold and uppipe, turbo hot side and downpipe. This keeps the gas fluid, retains energy and reduces under bonnet temperatures. On these turbos, TD04, TD05 16, 18 and 20G, a complete range of VF series from IHI and various Garrett...
  39. H

    VW LT 35 turbo output.

    Well that did not quite go as to plan and I have spent £200 on a turbo that is not exactly what I thought I was getting. I thought I was getting a VW 741-204 which would be a 2056 or 2256 but what I have is a 741-457 and that is stamped GT2052. The exhaust side is bigger than the existing...
  40. H

    VW LT 35 turbo output.

    Jarrus: Can you just clarify what has a gt2259 and can you confirm the VW 721-204 is either 2256, I hope, or 2056. My concern is that 1.9 litres in a daily driver will have a limitation at some point as to what is practical so what might work well on a 3 litre may not work so well on a 1.9...

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