Jesse888 Forged/stroker turbo ek9


Right.
We have 1.1bar of boost and it's fast, very fast lol
Audi TTRS tried it and failed miserably, gave a sports bike a good run for its money aswell lol

However, I decided to do a compression test to gauge how the engines doing, I can't remember testing it so I have no before figures to go from.
Figures are
195
205
205
215
So I'm a little concerned about Cyl 1 mostly, I was kind of expecting nearer 220 across all 4 aswell considering that's what the c4 bottom end ran. If it was something bad like a cracked sleeve/ring land I'd of thought it would of been much lower so I'm not panicking just yet, if it is then it could be sleeved block time lol
Anyway I've decided not to push the tune any further for now and see how this plays out. A track day on low boost and then check again should show any issues. This may have been running like this from the start as I can't remember testing it. The cars power is strong so that's not my worry, it's if it gets any worse...
 
jesse888 said:
Right.
We have 1.1bar of boost and it's fast, very fast lol
Audi TTRS tried it and failed miserably, gave a sports bike a good run for its money aswell lol

However, I decided to do a compression test to gauge how the engines doing, I can't remember testing it so I have no before figures to go from.
Figures are
195
205
205
215
So I'm a little concerned about Cyl 1 mostly, I was kind of expecting nearer 220 across all 4 aswell considering that's what the c4 bottom end ran. If it was something bad like a cracked sleeve/ring land I'd of thought it would of been much lower so I'm not panicking just yet, if it is then it could be sleeved block time lol
Anyway I've decided not to push the tune any further for now and see how this plays out. A track day on low boost and then check again should show any issues. This may have been running like this from the start as I can't remember testing it. The cars power is strong so that's not my worry, it's if it gets any worse...
Click to expand...
Sounds good Jesse!
Sounds like you're happy with your tune so far mate, track day will the proving ground!
I wouldn't worry too much about the slight difference in compression, lots of factors involved and could be something minor, also can be where one cylinder is cooling down quicker than the others since you started the test or did you test it from cold?
 
Yeah I'm happy with it so far. Seriously wish I'd gone sleeved though tbh. This turbo is crying for 1.5+bar!
I'll be honest and say my balls have shrunk on pushing the stock sleeves further than they are currently, far as I'm aware I could be damaging them now so I need abit more time at this level and see how it goes.

Test was done warm but was left to cool for a good 15-20mins with the bonnet up. All plugs out and throttle open.
I checked the plugs over but I'm no expert at this sort of thing, cleaned them up and put them back in.
 
jesse888 said:
Yeah I'm happy with it so far. Seriously wish I'd gone sleeved though tbh. This turbo is crying for 1.5+bar!
I'll be honest and say my balls have shrunk on pushing the stock sleeves further than they are currently, far as I'm aware I could be damaging them now so I need abit more time at this level and see how it goes.

Test was done warm but was left to cool for a good 15-20mins with the bonnet up. All plugs out and throttle open.
I checked the plugs over but I'm no expert at this sort of thing, cleaned them up and put them back in.
Click to expand...
Keep it as is for now then and see how you get on.
You don't want to go pushing it too far too soon, use it and enjoy your tune! Plus if you have too much power it won't be useable on track.
 
I'll be pulling abit of timing out of it and I'll compensate Cyl 1 with like 1-2% extra fuel.
My fuel logs on full boost are abit strange and my theory is I'm either running out of pressure from the pump or the wiring to the pump is restricting it's output abit. With Cyl 1 at the end of the fuel rail it's most likely to see damage from something like this I think.
I have pressed the tune abit too hard in regards to ignition timing I think and this may have caused a small amount of piston ring damage. Atleast that's the worst case theory for now and I'm not jumping to conclusions yet.
All in I'm very happy with the knowledge I'm gaining on an almost daily basis. If some lessons are learnt the hard way then so be it. You don't know the limit until you've surpassed it atleast once at the end of the day.
Rather my block to learn on than anyone else's.
 
Sounds good Jesse. Everyday's a school day, you seem to have the patience for it.
If you get too good you'll have to tune mine ;)
 
That's the ultimate aim buddy! Genuinely excited about tuning and the more you tune the more you start to think like a tuner.
Definitely no more full boost until the erratic AFR logs are fixed. Tbh that's probably what's harmed Cyl 1 (assuming it's something in the tune)
 
Last edited:
OK so plenty of testing and head scratching today is leading me to believe my wideband is reading richer (much richer) than the engine is actually running. This leads to all sorts of complications when tuning the ignition timing which is the issue I've been having.
Did a test run with a good 10% more fuel than necessary (according to the aem) and my issues seemed to have gotten much better so this leads me to believe I may be onto something. I very well could lose this engine over this wideband issue if it turns out too be true.

In other news valve clearances set up today and I smashed splitter blade v1 finally lol
 
jesse888 said:
OK so plenty of testing and head scratching today is leading me to believe my wideband is reading richer (much richer) than the engine is actually running. This leads to all sorts of complications when tuning the ignition timing which is the issue I've been having.
Did a test run with a good 10% more fuel than necessary (according to the aem) and my issues seemed to have gotten much better so this leads me to believe I may be onto something. I very well could lose this engine over this wideband issue if it turns out too be true.

In other news valve clearances set up today and I smashed splitter blade v1 finally lol
Click to expand...
Oh no that's a bummer, what wide band have you got? New one required?
 
It's an aem wideband. Along time ago my buddy had an incident with a grinder and my sensor, we thought we fixed it but thinking about it the gauge would read flat 10s on Romains tune on the old setup so maybe it was the sensor that was out and not the tune as I thought at the time.
it would certainly explain the issues I've been having so I'll be pleased but annoyed if this turns out to be the case.
I've had my eye on a fancy pants professional bit of kit for tuning other people's cars (eventually) So looks like that might be getting ordered early lol
I also like the look of @robthedoc wideband. Plx iirc?
 
Dude i know u need to learn by testing all this stuff but i think ur movin too fast take it a bit slower 1.1bar is alot of boost for anythin tbh jus sayin i know u know wah ur at but be a shame to blow ur engine if ya get me :) . Take it week by week an fine tune it. Its advice not a dig ur doin great work
 
I understand your concern bud and your right, miss-tune 1.1bar and **** gets broken really quick. Due to this I am very impressed with the strength of the wiseco pistons. Assuming im correct about the wideband being off (95%sure i am) then knowing that's off is something only experience can teach you at the end of the day. It's a good lesson not to trust all the info your being given and use your knowledge to confirm the data your seeing.
At the time of tuning I wasn't aware of the possible afr issue, mapping has been suspended until my new wideband equipment arrives and I learn how to use that, the tune has had 10% more fuel added to cover the possible issue and other parameters are all tuned down to cover the engine for safety.
However
In the map the jump from 0.5 bar to 1.1 really isn't a huge amount of work although my testing is mainly done in 0.5bar I do need to test it at 1.1 aswell due to the strange readings I spoke about earlier (now gone since I played with the aem sensor)
I think the low(er) compression is due to running it a little lean (due to sensor reading rich) this shouldn't get any worse now but worst case is its new rings(cough sleeved block cough)
As I've said before I even started mapping, if it costs me this engine to learn the right way then that's a price I'll pay. Im lucky it's a strong forged block really as that's allowing me to get away with this wideband issue without paying too much for it. I'll guarantee all the known tuners have made mistakes learning and the majority have lunched an engine due to their mistakes. Only thing that makes me different is everyone will know about it and jump on me when/if it happens....
Hopefully see some more tuning updates next week as this new wideband can be abit complex.
 
Really good reading the progress tour making jesse,
Only a few weeks or so ago it was just a little idea,
Now it's full all out tuning mode ! And your doing well so far , I'd pick a safe number and tune to that .
But I see what your doing, you will never know the limits if you don't go there , and best it be on your own motor ,
Keep up the good work mate , ☺
 
Due to the setup and all engines being that little bit different I don't really have specific numbers I can tune to per say.
Ball park certainly but just putting numbers in that should work isn't really tuning in my eyes. More of a basemap kind of thing.
My knowledge has sky rocketed in the few weeks I've been actually tuning, it's all real world stuff/problems aswell so it's invaluable in that respect. Knowing the theory probably saved this engine but real world experience would have had the issue diagnosed alot sooner/safer.
It's certainly a steep curve but I'm loving it if I'm honest..
 
Well said bud, we won't be jumping on you, well I won't.
Like you said it's a learning curve and if it costs you the block so be it..... Good excuse to go sleeved block.
Keep up the good work.
Looking forward to seeing you're new wideband.
 
Gess your right on every motor been different,
Now iv no idea about anything turbo or tuning!
So I gess I should not be thinking what I'd do, lol
When I said safe numbers , I was more thinking of
Bar .9 lol , jesse I'm your biggest fan here and can see that
You will be a master tuner soon enough,
All the best lee
 
Less boost? Pfffff

Thanks for the support guys. I do feel plenty of people in the scene are waiting for that moment to jump on me but I guess that comes with the territory really.
Will continue to update as and when things happen.
 
Jesse fu#k the haters! And you will never be a pro on till you break sh$t ,
That's tuning 101 , so Im told lol .
Only time I be jumping at you, will be to lift you back up,
I want to see some welds break off someones manifold lol
 
jesse888 said:
Less boost? Pfffff

Thanks for the support guys. I do feel plenty of people in the scene are waiting for that moment to jump on me but I guess that comes with the territory really.
Will continue to update as and when things happen.
Click to expand...

I for one will not. It was something i always wanted to do but didnt. I changed parameters in the map but never the map itself.
10 out of 10 for effort.
Looking forward to the dyno tuning.
 
jesse888 said:
I understand your concern bud and your right, miss-tune 1.1bar and **** gets broken really quick. Due to this I am very impressed with the strength of the wiseco pistons. Assuming im correct about the wideband being off (95%sure i am) then knowing that's off is something only experience can teach you at the end of the day. It's a good lesson not to trust all the info your being given and use your knowledge to confirm the data your seeing.
At the time of tuning I wasn't aware of the possible afr issue, mapping has been suspended until my new wideband equipment arrives and I learn how to use that, the tune has had 10% more fuel added to cover the possible issue and other parameters are all tuned down to cover the engine for safety.
However
In the map the jump from 0.5 bar to 1.1 really isn't a huge amount of work although my testing is mainly done in 0.5bar I do need to test it at 1.1 aswell due to the strange readings I spoke about earlier (now gone since I played with the aem sensor)
I think the low(er) compression is due to running it a little lean (due to sensor reading rich) this shouldn't get any worse now but worst case is its new rings(cough sleeved block cough)
As I've said before I even started mapping, if it costs me this engine to learn the right way then that's a price I'll pay. Im lucky it's a strong forged block really as that's allowing me to get away with this wideband issue without paying too much for it. I'll guarantee all the known tuners have made mistakes learning and the majority have lunched an engine due to their mistakes. Only thing that makes me different is everyone will know about it and jump on me when/if it happens....
Hopefully see some more tuning updates next week as this new wideband can be abit complex.
Click to expand...

Very good man i get ya but i doubt anyone will give you abuse if it blows you have already stated that this is a learning curve an ur doin great man haha jus incase u thought it was a dig :p But like u say you have to try it to learn :drive:

Oh an P.S to the other fellas ud swear i started war haha i jus gave my opinion whats with the **** the haters no ones hatin on the man
 
You must log in or register to reply here.
Back
Top