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What should I get first? FMIC, boost controller, dump, front pipe?

wilch

By wilch,
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wilch Grand Master

wilch

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Well the 3" front/dump pipe (already had HKS from the cat back), and greddy profec b spec 2 ebc went in yesterday. All tuned up on the dyno (the ebc that is) and all is good :P.

high boost is set to 10psi, low at 8psi. Very, very noticeable difference.

The car made 155rwkw @ 10psi. The skyline that they did before mine with similar mods only made 122rwkw @ 10psi on the same dyno. Is 155rwkw (taking into account the other skyline) healthy?

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rsx84 Veteran

rsx84

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Well the 3" front/dump pipe (already had HKS from the cat back), and greddy profec b spec 2 ebc went in yesterday. All tuned up on the dyno (the ebc that is) and all is good :).

high boost is set to 10psi, low at 8psi. Very, very noticeable difference.

The car made 155rwkw @ 10psi. The skyline that they did before mine with similar mods only made 122rwkw  @ 10psi on the same dyno. Is 155rwkw (taking into account the other skyline) healthy?

thats a big difference in power for 2 cars with similar mods, i think the only thing to think of is is the boost readings right as if there not then you maybe running more boost and hurt the turbo, if the readings are fine then you have a strong engine. NICE ONE mate.... :cheers:

wilch Grand Master

wilch

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The other car was a series 1, but with less kilometres though.

The boost reading should be reasonably accurate. Was using the Greddy profec B spec 2's psi reading... peak was 10.5 psi

rsx84 Veteran

rsx84

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The other car was a series 1, but with less kilometres though.

The boost reading should be reasonably accurate. Was using the Greddy profec B spec 2's psi reading... peak was 10.5 psi

i'd put it down to better mods on yours then, when you change the fmic you'll get an even bigger smile :headspin:

benm Grand Master

benm

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and as reference:

95 S1 w/ 94k

FMIC

Full 3" exhaust

7/12psi (only holds 10psi)

K&N Panel Filter

= 186rwkw

The front/dump/cat gave me around 10rwkw.

A K&N Panel filter is the simplest easiest mod for $100 and 2mins of your time, if you haven't already done that theni'd suggest doing it asap.

wilch Grand Master

wilch

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Benm are you still running the stock ecu?

I'm debating about my next mod. FMIC or power fc. Sydneykid recommended an after market ecu earlier on in this thread before FMIC.

I'm just wondering how safe it will be to continue to run 10psi with the stock intercooler.

Current mods are:

3" front/dump

3" HKS catback

K&N air filter

Greddy profec B spec 2 at 10psi (high boost), 7psi (low boost)

hmmm....FMIC or powerfc....

I guess with the powerfc I can keep the current boost setting, and lean the mixtures out properly to make more power instead of just shoving more air in there causing the a/f's to be over rich, and increasing the stress put on the engine.

Ultimately I want close to 200rwkw.

Am I right with my thinking? Sydneykid? Anyone?

wil..

Sydneykid Grand Master

Sydneykid

Posted
Posted
Benm are you still running the stock ecu?

I'm debating about my next mod. FMIC or power fc. Sydneykid recommended an after market ecu earlier on in this thread before FMIC.

I'm just wondering how safe it will be to continue to run 10psi with the stock intercooler.

Current mods are:

3" front/dump

3" HKS catback

K&N air filter

Greddy profec B spec 2 at 10psi (high boost), 7psi (low boost)

hmmm....FMIC or powerfc....  

I guess with the powerfc I can keep the current boost setting, and lean the mixtures out properly to make more power instead of just shoving more air in there causing the a/f's to be over rich, and increasing the stress put on the engine.

Ultimately I want close to 200rwkw.

Am I right with my thinking? Sydneykid? Anyone?

wil..

Hi Wilch, R33 GTST's with RB25DET's have really terrible A/F ratios and ignition maps as soon as you do almost anything to them. Sure you can sneak a bit, 20 rwkw here, 15 rwkw there and some people are happy with that. From your posts you indicatee that you were going to change the ECU (along with quite a few other things). So, as soon as I have someone who has made that decison, then my recommendation is to do the ECU upgrade early, just after the exhaust is the go.

Maybe it's just my personal experiences, but I have driven a lot of R33 GTST's where the owner has done quite a few mods (exhaust, boost, FMIC, POD, BOV sometime even turbo) and their cars don't drive "nice". They have the flatness at 5,000 rpm, the idle is flakey, they might have 200+ rwkw, but the average power is crap. They hit the std ecu overboost protection regularly. At this stage they don't want to spend $1.5K for what they think will be 20 rwkw. But the improvement in driveability is worth far more than 20 rwkw max power. The average power increase in more like 50 rwkw.

So I say, do the ecu early, you won't reget it. :)

benm Grand Master

benm

Posted
Posted
Benm are you still running the stock ecu?
Sure am.

I agree with SK has said below however i'd rather only have to pay for 1 tune instead of multiple after each mod, my next mods will be EBC then PowerFC.

Sydneykid Grand Master

Sydneykid

Posted
Posted
I agree with SK has said below however i'd rather only have to pay for 1 tune instead of multiple after each mod, my next mods will be EBC then PowerFC.

Hi Ben, that's not quite right. I don't have to totally retune after every mod. If I have done the maps properly I can accomodate a wide range of mild upgrades (FMIC, boost, exhaust POd etc) without doing any retuning. Noting that it is always worthwhile to give it a quick power run after an upgrade and check the a/f ratios, but that costs less than a tank of gas. Plus it enables you to establish a relationship with the tuner. Everybody is human, if I see a person 4 or 5 times I am going to spend a little extra effort, a little extra time to get his car spot on. It might seem wrong, but I can't help it, someone who comes once and I never see again is simply not going to get the same level of "attention". Maybe that's why we don't do any retail work. :cheers:

PACEY Collaborator

PACEY

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Posted

155rwkw ?? mine did 152 with just the cat back??? hope this means my engines strong, that will make up for the ..........interesting panel work.:cheers:

Dont mean to butt in on the thread but if my car is already making 152rwkw what do you all think it will make with the 3"dump/front, cat and a Apexi SVCR set at 10psi and Greddy cam gear and all tune up?

wilch Grand Master

wilch

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Not sure dude... But remember, all dyno's give out different readings.

The other skyline that went on the *same* dyno, on the *same* day, with similar mods before mine only put out 122rwkw.

wil..

  • 2 months later...
wilch Grand Master

wilch

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Thought I might as well update this thread.

Finally installed a Front Mount Intercooler on the weekend :P.

There's a noticeable change in response. That is, for the better. Seems to come on boost a little quicker. The seat of the pants dyno says things are better.

Dyno run at UAS on saturday. So hopefully it'll be better :D

wilch Grand Master

wilch

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next month/next pay packet :D

I managed a 166.9 rwkw on the skylines autralia dyno day at UAS a little while ago, with only 10psi, stock side mount, full exhaust and pod.

I'm hoping for over 170rwkw now I've got the front mount. (also have a cold air box with cold air feed now too).

PFC will be coming! :P

wil..

wilch Grand Master

wilch

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Yeah.... I was trying to dial that out.... :P

If you notice it spikes to 12psi at the start too...

But one thing though, it holds the 10psi.

The ebc I have is a Greddy Profec B spec 2. I think I've dialled the spike out... Unsure if it'll still be undulating though.

Any ideas?

wil..

*****EDIT: created a new thread with the new dyno sheets since the FMIC install. click here -> http://www.skylinesaustralia.com/forums/sh...ead.php?t=51971

NOW @ 184.2rwkw on the UAS dyno!!!!!!!!!!

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