Autech Pulsar GTi

Discussion in 'Members Rides' started by Dale, Sep 18, 2009.

  1. Dale

    Dale Moderator Staff Member

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    Yeah i agree with that David.

    Im satisfied with my intake. It has a good 90mm cold air feed, the filter is shielded from engine heat, the exhaust is wrapped and also shielded and i have a thermal intake manifold spacer. Its 100% getting cold air.

    The tubing going over the cam cover doesnt get hot, no more so than the heat soak you get on the intake manifold itself. The main thing is that cold air is entering at the air filter, i dont believe the air really has chance to warm up through the intake tube.
     
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  2. mera red gti

    mera red gti

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    Yep cold air to the isolated filter is key - u going JAE Frank?
     
  3. Dale

    Dale Moderator Staff Member

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    Unlikely dude.

    Mapping session coming soon though!

    Did a compression test the other day and maxxed out the 300psi gauge on each cylinder.
    Would guess it has 350psi across the board judging by how far round the needle was going.

    Ive just switched to the highport cam cover to gain some extra room for the intake pipe. The highport cover is not as tall as a VE cam cover. First attempt at installing this didnt go well and ended up with lots of blue smoke and oil consumption. Think ive figured it out now. AUTECH ENGINE.jpg 2014-08-04 17.30.55.jpg
     
    Last edited: Aug 27, 2014
    Sam, edk and Dyldo like this.
  4. Dyldo

    Dyldo

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    Location:
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    Surely one of, if not the highest HP N/A FWD SR20 in the UK. Can't wait to see what it produces and even more so to see it running

    Sent from my SM-G900F using Tapatalk
     
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  5. mera red gti

    mera red gti

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    Good thinking for mor clearance
     
  6. Sam

    Sam Moderator Staff Member

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    full of ideas
     
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  7. Dale

    Dale Moderator Staff Member

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    Haha Yeah thanks must go to Sam for the tip on the highport cam cover. Will see how long it takes for him to persuade me into spending more money on a custom alloy intake pipe now.
     
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  8. Sam

    Sam Moderator Staff Member

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    haha, Il sort that out.
     
  9. Dyldo

    Dyldo

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    Samwise

    Sent from my SM-G900F using Tapatalk
     
  10. mera red gti

    mera red gti

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    20V rocker cover? Jokes
     
  11. sunnytropic

    sunnytropic

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    Car looks great Dale, kit looks brilliant.

    Really stands out from everything else on the road.

    Keep it up !
     
    Dale likes this.
  12. Rob-Gti

    Rob-Gti

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    Looking great Dale and good idea Sam with the valve cover. A fabricated pipe would just finish it off...In carbon though to prevent heat transfer ;) I've seen how hot my aluminium strut brace gets.
    What you doing with the N1 valve cover.....:)
     
  13. Liam

    Liam

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    Looks great Dale, I think a custom hardpipe would finish it off nicely though :)
     
  14. Dale

    Dale Moderator Staff Member

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    Cheers Rob. Im hanging on to the N1 cover, just keeping as a spare. Its not in the best condition now anyway.
     
  15. Dale

    Dale Moderator Staff Member

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    Well i took the car in for tuning, with not so good results.
    Ignoring the lowish peak hp numbers, the car is faster.

    I have run into problems with audible pinging / detonation from around 5000-7000rpm with a bad missfire developing after 7300rpm, I thought ignition timing could have been tweaked to resolve this but all that happened was the power dropped masssively with only a couple of degrees taken out.

    I noticed the detonation as soon as i fitted the N1 cams. No detonation was heard prior to this when using the regular 16VE cams.

    The current setup is:
    SR20DE Block / 16VE Head
    SR16 Pistons
    SR16 N1 Cams
    Custom Intake Manifold
    Q45 Throttle Body (80mm) with 73mm Intake Pipe
    Custom 4-1 Exhaust Manifold (shortened mazworx header)
    OEM CAT
    2.25" Mandrel Exhaust (2" backbox) 2014-09-03 17.39.44.jpg
     
    Last edited: Sep 6, 2014
  16. Dale

    Dale Moderator Staff Member

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    So now im looking at ways to eliminate the detonation and missfire.

    I find it odd that the detonation occured after fitting the n1 cams and i think this might be key to resolving the issue.
    Perhaps altering the cam timing might help??

    Compression is over 300psi per cylinder.

    Could be a weak spark? Worn Dizzy cap/rotor. Too hot heat range plug?
     
    Last edited: Sep 6, 2014
  17. Sam

    Sam Moderator Staff Member

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    Cam timing could be key, are you running them straight up?
     
  18. Spook

    Spook

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    996
    99 RON?
     
  19. Dale

    Dale Moderator Staff Member

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    The N1 cams are fitted straight up on OE cam gears. Retarding the intake cam might help reduce cylinder pressure, but not sure about that at higher RPM's??? Also havent got adjustable gears to test.

    Running on 99RON fuel as always.
     
  20. rowdy-GTi

    rowdy-GTi Moderator Staff Member

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    What was the fueling / AFRs like?
    I assume N1 cams can make power up to 8k? If so on that graph you would make around 225-230hp. Is that a more reasonable figure? Liking the flat torque.
     
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