Hybrid problem

[CyccX]

hello,

my engine is fully rebuild megane F7R bottom and F7P R19 16v head.

after rebuild i have no problem with engine, running well. i used stock f7p ecu so have less power then before.

i decided to buy gunner180 from summeh in this forum. I fit this chip in my R19 ECU and.. i'm disappointed. When im using gunner180 i have problem with:

start the engine, i have to use accelerator to start engine.

when i allready started the eingine, engine works fine. using 3/4 accelerator its all ok.

but i have problem when i using 100% trottle. engine loosing hid power, not pushing, and paused.

any one have solution for me ??

P.S. Head was machined CNC -0.7mm so i thing my comp ratio is about ~12:1

fuel pomp is stock, fuel regualtor also stock.


bad version of ECU, chip dont work corretly ??
fuel pomp is to weak ?

http://www.youtube.com/us...u/1/QtmZyq56PME

[CyccX]

repair link http://www.youtube.com/user/Cycc86#p/a/u/1/QtmZyq56PME

[midge]

Does the code on your ecu end in 101? i am using one of my gunner chips (not 180) in my 101 ecu and its fine.
I would suspect this 180 chip is not compatable with your ecu, put your old chip back in.

[Coops]

as above, sounds like a compatability issue with the R19 ecu to me

[kj16v]

No way you should be using a Gunner180 for with a 12:1 Compression ratio. It's made for standard or engines with light breathing modifications. Gunnerchips have a lot more ignition advance than the standard chip.

[CyccX]

when i put back my stoc chip, engine start well, and run ok even with 100% throttle. but as i said, stock chip is 1.8 16v, my engine is 2.0 now, and in my opinion fueling is too low in stock chip. that why i bought a gunner180, but unfortunately i have got no resoults :(

[CyccX]

No way you should be using a Gunner180 for with a 12:1 Compression ratio. It's made for standard or engines with light breathing modifications. Gunnerchips have a lot more ignition advance than the standard chip.

you suggest to use more octan fuel ?? Pb98 octan or 99+ ?? now im using Pb95 like allways.

[robi1000]

If your engine is fine on 3/4 throttle and performs badly on full throttle it's probably fueling issue. I'm not an expert on gunnerchips but as far as I know standard chip ignores lambda sensor on full throttle. So if gunner still has this enabled it's probably AFR. Until full throttle lambda corrects your AFR, but when on full throttle lambda is bypassed and your AFR gets lean. And as mentioned before. With 12:1 CR you should get your car mapped properly because this is too far from standard spec. IMHO high 11 or around 12 is very high for road engine running pump gas, so if you can use 98 octane or higher. But there will still be problems with your ignition timing, etc. Only proper solution is remap.

[Justin..]

You sure its 12:1???? :?

[zmaster2k]

12:1 with just a cnc'd head is a tad high isnt it?

high comp pistons give you 12:1!

10.5:1 would be more realistic IMO?

[dkrevs]

If standard pistons are installed there's a very little chance your CR is 12:1. I would first try with 2.0 16V chip(Williams) TBH. This chip should run engine just fine, but as said before if high comp pistons are used then forget any gunner chips, etc. Standalone is a way forward!

[CyccX]

ok i'm sorry, maby i go to far when say 12:1.. i have standard F7R lump with stock pistons. but i cnc'd head about 0.7mm and capacity (diameter) of chamber in stock F7P head is smaller then stock F7R head. cuz of that comp ratio is growht. i dont really know what comp ratio i have, can only guess. for sure its around 11:1

that summeh said :Gunner is just a map adjustment of the standard chip, i.e. ignition advance and fuel map tables, so on full throttle above certain RPM the ecu will ignore the lambda sensor and operate in open-loop, just as the standard ecu does.

To recap, it works exactly as the standard chip does. Load = open-loop."

[summeh]

if your engine is heavily modded then perhaps you are better off with a custom remap?

[CyccX]

its not havily modded.. it's standard hybrid, with head work and cnc'd.. nothing special, except little more comp rate..

[kj16v]

16V pistons are flat-topped. I don't remember if Williams pistons are? If they are, I work out the new comp ratio to be approximately 11.4:1. Definitely too high to run with a Gunnerchip. Maybe even to run with a standard Willy chip.

[CyccX]

my pistons in F7R 710 bottom are diffrent then F7P pistons..

http://images44.fotosik.pl/274/03e1c1609151ce5am.jpg (http://www.fotosik.pl/showFullSize.php?id=03e1c1609151ce5a)

[zmaster2k]

aye the look like mine..

[CyccX]

Hi mates

i'd like to thanks for all ppl who trying to help me.

i figured out that 99% was a fuelling problem. I put new fuler pressure regualtor and.. everything i allright. i mean, on full thorttle engine is not paused, and it's beautfully geting RPM's.

so, i hope that was a problem.

[Brealbags]

hows the hybrid running now can i ask?

Sounds very similar to the engine im currently building. Although my head has only been skimmed once, and only surface grind nothing serious.

I have a gunner180 to try so could do with knowing if there are issues

[kj16v]

The Gunnerchip isn't bad on a completely standard engine, or one with mild breathing modifications - although there are still gains to be had from a proper remap.

However, the Gunnerchip wasn't designed to run engines with major modifications such as cams, non-standard cylinder heads or modified compression ratios.

The Gunnerchip runs a fair amount more ignition advance than standard. If the compression ratio of your engine has been significantly modified then you run a severe risk of detonation - and ruining the engine. It must be remapped to suit.

[CyccX]

so far so good, no issue for now. gunner180 works properly only have problem witch start engine - need to use accelerator.

For more security i bought more octan fuel 98. my car runs also LPG gass so advenced ignition is desirable :)

[kj16v]

If you have to use the accelerator to start the engine then the chip isn't working properly! :)

You are running a higher compression ration and lpg. LPG is completely different to petrol. Even the stoich air/fuel ratio is different. You must get it remapped properly - unless you want to burn down your engine.

Same goes for all engine modifications, whether its cams, head work, turbos, whatever: One chip isn't a magic pill that'll run all engines. If you customise your engine you need to customise your mapping.

[CyccX]

i know i know i know.. i figure this out;;')