CrackedDSM
10+ Year Contributor
- 3,473
- 2,628
- Dec 17, 2009
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Pensacola,
Florida
He was fun to work around for sure. He's a trip for sure.
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There are a lot of things that will effect spool. Boost leaks, camshaft lobe separation, afr and timing advance DURING spoolup are a few.
What gear are you in when you get these results?You're seeing 26psi at 4600rpm?! i have tried everything, done countless leak tests, checked base timing, drew jones tune, and my 95 tsi awd with a 6 bolk block/2g head is STILL only making 26psi by 5700rpm on a perfectly healthy HTA Red...
3rd..
and actually I only hit 23 psi by 5700
Take the line off the wastegate, plug the end of the line then punch it in third gear and see what happens but obviously let off the pedal as soon as you hit your target boost otherwise the turbo will hit over thirty psi with no wastegate signal. If it shows a huge difference in spool, then you just need to tune the solenoid a bit more. Of course the safer way to do the above test is to borrow a friends mbc or build a cheap one real quick.
Holy hell, Rrussell, I can only imagine what Red powa would be like at that rpm! Wheres peak torque on that setup?
Its definitely the turbo for the job. With the right cams and springs, and intake manifold it should be easy to make over 400whp on pump.Yeah, 400 whp on 93 pump piss is why I went with the Red. Hope I get there. Im still trying to get my max effort on the tune before going to the dyno.
It's all in the tune. 400whp isnt hard to make on these cars. I made 398whp on a bolt on hx40 at 20 psi on english racings dynojet. Nothing special either.. And they didn't even turn up the boost.... I left their shop cranking up the boost to 30 and re tuning my way home. Never been on the dyno since then and I'm sure car never made less then that. This was on 92 pump. I just switched to e85 and highly recommend it if it's available.
Thats a pretty decent curve on pump with the boost that high, but if its knocking try going with 4.5K 8*, 5k 9*, 5.5k 10*, 6k 10* ,6.5k 11*, 7k 12*. You wont get away with much timing on pump. I had mine higher than yours but I noticed that it would knock during back to back pulls on the interstate, so I had to change the map bigtime. Ive got mine at 27 ish psi as of right now. Been tuning tonight a little. I could probably add a little timing around 4K but my low timing seems to help the spool, though I can feel a slight drop in torque when I initially punch it, so it definitely needs some adjustment. Im also using some experimental code in my setup so that basically, instead of grev, my map is based on rpm and maf hz. Pretty interesting and very easy to tune so far.
Yeah, I did mine at 28psi with more timing than Im running now, and it seemed okay but I only did one hard pull. Then, when I went to get ready to maybe go to the dyno, I really reamed it, back to back to back and it knocked, sometimes up to 12 counts, so I backed things down. Im going to crank it up a bit tomorrow if I have time, but Im on the stock bottom end rebuild, and Id hate to puke a rod
Still waiting to get it on the dyno but my guess would be around 4200 to 4500 rpm? I have some control on where the max boost will come in based on where the FP Red comes online.Take the line off the wastegate, plug the end of the line then punch it in third gear and see what happens but obviously let off the pedal as soon as you hit your target boost otherwise the turbo will hit over thirty psi with no wastegate signal. If it shows a huge difference in spool, then you just need to tune the solenoid a bit more. Of course the safer way to do the above test is to borrow a friends mbc or build a cheap one real quick.
Holy hell, Rrussell, I can only imagine what Red powa would be like at that rpm! Wheres peak torque on that setup?
If it's internally-gated, make sure the cover didn't walk down and take all the tension out of the wastegate actuator. I had a customer send one for a "rebuild" with a similar complaint and there was nothing wrong with the turbo itself...the cover slid down and the flapper was hung open about 1/8".You're seeing 26psi at 4600rpm?! i have tried everything, done countless leak tests, checked base timing, drew jones tune, and my 95 tsi awd with a 6 bolk block/2g head is STILL only making 26psi by 5700rpm on a perfectly healthy HTA Red...
If it's internally-gated, make sure the cover didn't walk down and take all the tension out of the wastegate actuator. I had a customer send one for a "rebuild" with a similar complaint and there was nothing wrong with the turbo itself...the cover slid down and the flapper was hung open about 1/8".
FP should incorporate some type of locating pin like a 16G has to prevent this from happening....it's the downside of using strong actuators on turbos that don't have a bolt/flange-type clamp system for the compressor cover.