Dyno Tuning Results From Hitman Tuning

[Wink]

  Blitz said:

It could also be argued that that power figure looks a tad optimistic for an automatic RB25DET with the mods you have listed.

<{POST_SNAPBACK}>

I thought my graph was optimistic until I saw this thread.

3 inch turbo back (stock cat)

FMIC

EBC

Pod

on Auto R33 GTS-T

It gave me 190+ (192 I think) but timing was all out so the setting on the EBC was put back a tad.

I'm contemplating a SAFC2 and I hope it will give me 195+.

[wilch]

  Blitz said:

This is an interesting thread

Security: Lets not mislead people into thinking that 50rwkw gains are achievable through the use of an S-AFC, especially on a car like yours that is virtually stock because they arent - end of story.

The ONLY way that you could find that much more power is if your car was running like absolute shite beforehand. The gain is not soley attritbuted to your S-AFC.

It could also be argued that that power figure looks a tad optimistic for an automatic RB25DET with the mods you have listed.

<{POST_SNAPBACK}>

I'm thinking that his base timing was way off. Majorly retarded.

That's where the gains were had, I'm guessing.

[satanic]

Can someone explain how the timing or "base timing" as mentioned above can be changed? Last tune, only the SAFC was touched, nothing about timing at all - just wondering if this would help me squeeze past 200rwkw (only out by 5.4rwkw at the mo.)

[Wink]

  satanic said:

Can someone explain how the timing or "base timing" as mentioned above can be changed?  Last tune, only the SAFC was touched, nothing about timing at all - just wondering if this would help me squeeze past 200rwkw (only out by 5.4rwkw at the mo.)

<{POST_SNAPBACK}>

I think the only way to do it properly is a replacement or piggyback ECU.

[wilch]

  satanic said:

Can someone explain how the timing or "base timing" as mentioned above can be changed?  Last tune, only the SAFC was touched, nothing about timing at all - just wondering if this would help me squeeze past 200rwkw (only out by 5.4rwkw at the mo.)

<{POST_SNAPBACK}>

Base timing can be checked with a timing light.

It is adjusted by turning the CAS.

hmmmm picture's would help ay...

[Miller the hoon]

I have 255rwhp in an auto and you cant compare it to a manual

and 50rwkws could be gain if it was running like shit on 92 oct

and serviced air leaks fixxed 98oct and a border line good tune close to blow up

sit am wondering the psi run

turbo mabe hiflowed

james

[wilch]

pic showing the cas.

DO NOT START TURNING THIS UNLESS YOU KNOW WHAT YOU ARE DOING AND HAVE A TIMING LIGHT TO CHECK THE TIMING.

[wilch]

If I remember correctly base timing should be set to 15 degrees BTDC??? (I'm pretty sure it's 15)

Any lower and you loose power, any higher and you can kill your engine.

[SECURITY]

well Nick, if you read my post properly it says he played with my timing also.

apparently my timing was off to begin with.

he advanced it half way through the tune when it reached around 168kw and it jumped to 184kw.

my point of this thread is that he actually picked this up. not only did he tune my safc, he also fixed my timing problem. its for that reason i thought i had to post this thread... he definately knows his cars.

[satanic]

CAS = ?

Sorry about the questions, just interested to know. Autos are very limited in what you can do to tune them, especially in the R34 where the stock ECU is quite stubborn

[ECR033]

  satanic said:

CAS = ? 

<{POST_SNAPBACK}>

Crank Angle Sensor

[SECURITY]

  Blitz said:

This is an interesting thread

Security: Lets not mislead people into thinking that 50rwkw gains are achievable through the use of an S-AFC, especially on a car like yours that is virtually stock because they arent - end of story.

The ONLY way that you could find that much more power is if your car was running like absolute shite beforehand. The gain is not soley attritbuted to your S-AFC.

It could also be argued that that power figure looks a tad optimistic for an automatic RB25DET with the mods you have listed.

<{POST_SNAPBACK}>

and just as a direct reply to your post.. 50kw is 50kw.

if the dyno was reading high then it doesnt matter does it?

my base figure would've just been lower also which still doesnt change a 50kw gain.

and ive also said that he played with timing and allowed me to close the gaps on my spark plugs.

tell me another tuner that would allow you to do these things and give the same power output for the same price (it cost me $200)

[wilch]

  ECR033 said:

Crank Angle Sensor

<{POST_SNAPBACK}>

yep, all RB's have them satanic.

[Miller the hoon]

Safc gave 12rwkws and tune did rest

he sounds good

James

[satanic]

Cool thanks... next tune I'll tell them to check the timing, will any workshop be able to wind the CAS up/down? Or do I need to go somewhere specific?

[SECURITY]

any shop will be able to do it considering theyve got a timing light.

[Blitz]

  SECUR1TY said:

well Nick, if you read my post properly it says he played with my timing also.

apparently my timing was off to begin with.

he advanced it half way through the tune when it reached around 168kw and it jumped to 184kw.

my point of this thread is that he actually picked this up. not only did he tune my safc, he also fixed my timing problem. its for that reason i thought i had to post this thread... he definately knows his cars.

Great, im really happy for you, but perhaps you didnt read my post. I was making a general statement and hoping you would post your before dyno sheet and or clarify specifics of what hitman fixed up to bring your power up (which you have now done)

Dont get me wrong, its a great gain, but for the 3rd time, i was simply saying it is always a good idea to confirm for everyone what was going wrong before so everyone understands where you made up the 50rwkw so people dont incorrectly assume that if they go and fit an S-AFC they will get these sorts of gains.

Either way, it looks good, and your car should be a different car now

[wrxhoon]

  SECUR1TY said:

any shop will be able to do it considering theyve got a timing light.

<{POST_SNAPBACK}>

I havent seen a shop that doesn't have at least one timing light

Timing on rb25's should be set at 15+or-2 degrees at 650 rpm .

What was your timing set at before ? It can make a lot of difference .If retarded it wont have any power , if advanced to much it may ping ( knock ) and you may blow it up .

I dont doupt the 50 kw increase if your timing was way out , but the power your car is making is fat to optimistic in my opinion . As i said before its an auto and you have the aid of the torque converter and second gear .

A good way to find out the true power that your car is making , take it to wsid and see what your terminal speed is , thats a very good indication of your average power .

[SECURITY]

im pretty sure my timing was off.

i posted a dyno graph showing the before and after curve.

so just to clarify, i got 147 on 3" turbo back, fmic, pod and 12psi

with retarded timing (i THINK it was sitting a few degrees under stock).

if my timing was spot on then im guessing i would've made around 160kw as my base. but you cant really tell.

also another thing i'd like to add is he said that sometimes the knock sensor on the safc screws with the timing, if the knock is high then somehow it will retard timing so he advised me to disconnect it.

[SECURITY]

im going to wsid in two wednesdays time. it should be interesting.

should we make an event of this?