|
|
05-09-2014, 03:44 PM | #1 |
Major
301
Rep 1,473
Posts |
Anyone upgraded lpfp on the Z4
There are many people in the 3 and 1 Series that have done this and I was wondering if anyone on this board and tried this mod. SteveAZ sells a kit that he designs but the Z4 has a different setup than the 3 and 1 and it won't work.
I have been in contact with Steve and he might be able to help us out but he will probably want some interest. The purpose of this mod it to be able to run higher concentrations of E85. The stock pump won't keep up and the fuel pressure will drop too much and that is why the lpfp is either replaced or an inline lpfp is used in conjunction with the stock pump. Anyone have interest in this mod? Using 50% E85 and 50% 93 will get your rwhp to around 450 on stock turbos with a proper tune. |
05-09-2014, 08:36 PM | #2 |
Private
9
Rep 85
Posts |
I have been wanting to upgrade the LPFP for some time. Yes definitely have interest in a plug and play kit.
I have looked at the Z4 LPFP bucket and pulled the pump out and can confirm it is very different to the 3 and 1 series. Ours also has a more complex siphon system to draw fuel from the other side of the tank (look at realoem if this doesn't make sense to you), so if we don't keep this working properly then we technically halve our fuel carrying capacity. The existing pump looks exactly like the Walbro 455 (same shape and size) so I do expect that the 455 will drop into the bucket without modification. The only issue is that the hoses are all molded, no clips on the pump bucket area, and you have to cut the hoses to change the pump out - no issue if you know how to connect fuel hoses properly (I'm not confident to do this yet due to reading about problems others have). I'm interested in the in-line option, but again not sure if this will disrupt the tank siphon system. Technically, if we left the OEM pump in place the in line option could be plug and play, with the right clips - which are different to the 3 and 1 series. I have a few meth flow issues to sort out first, once they are solved I was going to get back to the LPFP. As I said, would be great for SteveAZ to come up with a plug and play for the Z4! Last edited by Ramjet; 05-09-2014 at 08:42 PM.. |
Appreciate
0
|
05-09-2014, 09:18 PM | #3 |
Major
301
Rep 1,473
Posts |
I looked at both of the pumps online and the Z4 looks very different. I agree that I would prefer an inline option rather than a pump replacement.
However, I am curious as to how long a new or almost new OEM pump assembly would last if you started running higher concentrations of E85. Will the OEM pump just not produce enough psi even if new or does it just wear out over time and lose psi. If a new OEM pump will work for a period of a year or 2 then I would just consider replacing the OEM pump when it starts to lose psi. |
Appreciate
0
|
05-12-2014, 07:55 AM | #4 | |
Lieutenant General
3193
Rep 10,509
Posts |
Quote:
What about going with RB turbo + methanol injection kit rather than E85 ? |
|
Appreciate
0
|
05-12-2014, 10:11 AM | #5 | |
Major
301
Rep 1,473
Posts |
Quote:
If you have a proper tune than this is not an issue. PTF can handle this. I like the idea of using E85 because it is cheap. RB and Meth is going to be 5k+. I am running E50 on the OTS Cobb map and it is crazy how much more power it makes. |
|
Appreciate
0
|
05-19-2014, 03:40 PM | #7 |
Major
301
Rep 1,473
Posts |
e50 is most common. LPFP is the weak link and higher amounts of e85 can be run if the LPFP can keep up. I am going to Dyno my car again on my PTF 50 map soon to compare to my PTF 93 map. I think that I will probably pick up 50hp and 50tq. It is really ridiculous how much more power my Z4 makes on E50.
|
Appreciate
0
|
05-19-2014, 04:44 PM | #8 |
Captain
334
Rep 624
Posts |
Just go with an inline 255, that's the best option right now until PTF releases their new products. For the price (~$150) nothing really to lose anyways.
It'll hold up just fine for the amount you're running, plus any more E85 would be useless in terms of power. There's "kits" with all the accessories you'll need on Ebay. |
Appreciate
0
|
05-19-2014, 07:17 PM | #9 | |
Major
301
Rep 1,473
Posts |
Quote:
|
|
Appreciate
0
|
02-21-2016, 09:20 PM | #10 |
Private
8
Rep 64
Posts |
What fuel upgrades are people doing on the Z4 for stage 2 turbo upgrades? I haven't seen any lpfp options.
__________________
2009 Z4 DCT - Hexon RR600, MMP Inlets/Outlets, Wagner EVO 2 Comp FMIC, Fuel-It TBI, Fuel-It Stage 2 LPFP, ER CP, Forge DVs, N20 TMAP, BQ Tune 93/E65, BMS DCI, AR Catless DPs, BMS OCC, RB PVC
|
Appreciate
0
|
04-28-2018, 01:45 PM | #11 |
Private
8
Rep 64
Posts |
DW400 lpfp setup
Has anyone tried installing the new DW400 lpfp in the E89 tank? It is supposed to flow 30%+ more fuel than Walbro 450, which doesn't flow enough for my stage 2 turbos.
__________________
2009 Z4 DCT - Hexon RR600, MMP Inlets/Outlets, Wagner EVO 2 Comp FMIC, Fuel-It TBI, Fuel-It Stage 2 LPFP, ER CP, Forge DVs, N20 TMAP, BQ Tune 93/E65, BMS DCI, AR Catless DPs, BMS OCC, RB PVC
Last edited by dwspen01; 04-28-2018 at 01:54 PM.. |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|