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Discussion Starter · #1 ·
Hi

I was wondering if I have to get my stock ecu remapped for NL road fuel?(Skyline r32 gts-t)
In japan road fuel is high octane (ron100 or 102?) and the road fuel in Holland is about ron98,

Can I run a fmic, 3 inch from the turbo, and an open air intake without having to get my ecu remapped? It doesnt have an fmic mounted yet but I'm planning to, and I was wondering if its possible without a remap?

I've read about resetting the ecu and it wil self-learn but I'm not sure if that's true.
 

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hippy
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98 was much more widely avaiblable than 100/102 when the r32 was about as a new car so unless its been remapped in japan i wouldnt worry about it till you start tuning
 

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Discussion Starter · #3 ·
do you think I can run a fmic without my engine getting assraped by detonation?
 

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hippy
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a frontmount wont give you det,it might affect spooltime and give you slight overfuelling if its really big though
 

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FMIC is there to cool things down and remove the risk of det even more, if you are going to get a remap I would suggest getting the exhaust and air intake done first and then fit a FMIC, a higher flowing fuel pump, up the boost to around 0.8 bar and then get a remap, have a read of this thread on RB engine tuning

http://www.skylineowners.com/forum/showthread.php?t=66975
 

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Discussion Starter · #7 · (Edited)
okay thanks! And do you think a boost controller is worth the effort on a stock ceramic turbo? I dont want to boost the hell outta my seals wich I think will happen above 10psi

@Murphy

a 3 inch exhaust and an open air intake are already mounted, I was only wondering if a fmic would cause my engine to detonate without a remap.
 

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... is modifying the driver
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okay thanks! And do you think a boost controller is worth the effort on a stock ceramic turbo? I dont want to boost the hell outta my seals wich I think will happen above 10psi

@Murphy

a 3 inch exhaust and an open air intake are already mounted, I was only wondering if a fmic would cause my engine to detonate without a remap.
What are your plans for the car, stage 1 or bigger power (400-500bhp) if you are going for more than stage 1 then as you may appreciate you need to plan out the upgrades so they get done at once to reduce the number of remaps.

From personal experience when I fitted my FMIC before upping the boost t 0.8 bar and getting remap I did get hesitation on full boost around 4k revs, the remap sorted this, a FMIC will cool down the air going into the engine and help reduce the risk of det
 

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hippy
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why do you think it would det? det is caused when cylinder temps get high enough to ignite the fuel before the spark arrives
 

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Discussion Starter · #11 ·
I got a boost controller on stock tubby running .85 got

299bhp so yes it is worth it imo and thats with out a remap
I'm going not any further than stage1, Because I think its a waste of money to go stage2 or higher with rb20det, you could swap an rb25det for half the money.

But I assume you run an rb25det?
 

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I'm going not any further than stage1, Because I think its a waste of money to go stage2 or higher with rb20det, you could swap an rb25det for half the money.

But I assume you run an rb25det?
Yes I've got a RB25DET, so not too sure if the RB20 will suffer the same affects from fitting a FMIC as I experienced, hopefully someone with an RB20 will come along and confirm
 

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Discussion Starter · #13 ·
I have another question for you, just curiosity; how much do you think turbo pressure will raise after full decat (hks downpipe = decat too?) standard pressure is about .7bar or 10psi, but since you cant go much higher then .8bar on the stock rb20 turbo I was wondering if a boost controller will be usefull, if not the decat will raise it to max boost for the stock turbo?
 

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hippy
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the wastegate controls boost levels,putting the decat on will just allow spooltime to be slightly lower as there is less resistance on the exhaust wheel side of the turbo
 

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Discussion Starter · #15 ·
yes thats what I thought too, but my mate (bmw e30 with JDM 2JZ-GTE) claims his pressure increased from .65 to .8 after a full decat? then I thought why the hell do I need a boost controller on a stock ceramic turbo then?
 

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Fitting a 3" system from turbo back on my s14a increased the boost pressure slightly. Less back pressure on the turbo lets in spin faster.
 

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I can send you a remapped chip to put into your ECU with 98R fuel, remapped Ignition and Fueling and the Boost limit removed so you can up the boost. This will make a massive difference to your car.
 

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Discussion Starter · #18 · (Edited)
I can send you a remapped chip to put into your ECU with 98R fuel, remapped Ignition and Fueling and the Boost limit removed so you can up the boost. This will make a massive difference to your car.

Depends on the price you're asking included shipping/ freight costs to holland,
I was planning to get an stage 1 chip after I mounted an fmic, bigger turbo in first place, cuz right now its not 1 of the things that NEED to be done.

does the chip eliminate the speed limiter too?
 
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