Why is my spool slow?
#1
Why is my spool slow?
Hello everyone,
This is my first experience with turbo on a miata. I've fitted the Begi S3 kit on my standard 1,6 '91 115hp engine. In my opinion the engine spools rather slowly, or at least I want it to spool faster : ) I reach the max of 11 to 14psi (depends on the outside temp) at 4300rpm...
I would like to have full spool on at least 3500rpm if possible???
I've read some spool data and noticed that most of the cars do better than my setup at the moment.
This is my setup:
- Garrett GT2560 Turbo with Ball Bearings and Water Cooling, ceramic coated
- Stainless Steel Separated Gases Downpipe 2,5"
- IC # 2 rated to 300 whp
- ceramic coated standard manifold
- ms2pnp with EBC (no variable tps)
- OBX catback system with cat replacement (open) I think 2"or2,25" not sure
- the original begi recirculate valve (looks crappy)
If needed I will post my current MS2pnp mapping or anything else to help me solve the issue.
what could solve my problem? bigger exhaust, better mapping, smaller turbo,or anything else...
thanks everybody
This is my first experience with turbo on a miata. I've fitted the Begi S3 kit on my standard 1,6 '91 115hp engine. In my opinion the engine spools rather slowly, or at least I want it to spool faster : ) I reach the max of 11 to 14psi (depends on the outside temp) at 4300rpm...
I would like to have full spool on at least 3500rpm if possible???
I've read some spool data and noticed that most of the cars do better than my setup at the moment.
This is my setup:
- Garrett GT2560 Turbo with Ball Bearings and Water Cooling, ceramic coated
- Stainless Steel Separated Gases Downpipe 2,5"
- IC # 2 rated to 300 whp
- ceramic coated standard manifold
- ms2pnp with EBC (no variable tps)
- OBX catback system with cat replacement (open) I think 2"or2,25" not sure
- the original begi recirculate valve (looks crappy)
If needed I will post my current MS2pnp mapping or anything else to help me solve the issue.
what could solve my problem? bigger exhaust, better mapping, smaller turbo,or anything else...
thanks everybody
#15
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As a fellow 1.6 owner, I hate to say it, but if you want an improvement get a 1.8 w/ 3" exhaust. Or at least upgrade to 3" exhaust on the 1.6 and live with decent but not outstanding spool.
#16
@FRT_Fun I agree, unfortunately you're right but I have to do with 1,6 for now...
@thenuge26 My idea was to remove the complete exhaust and test with only the downpipe fitted. Would this give the same results in spool as a 3" exhaust or am I completely wrong?
@JasonC SBB no leaks wastegate flapper complete closed
Can somebody check my mapping please???
which 3" exhaust brand would you guys prefer? Available in Europe if possible... Do I need a 3" downpipe too?
thanks
@thenuge26 My idea was to remove the complete exhaust and test with only the downpipe fitted. Would this give the same results in spool as a 3" exhaust or am I completely wrong?
@JasonC SBB no leaks wastegate flapper complete closed
Can somebody check my mapping please???
which 3" exhaust brand would you guys prefer? Available in Europe if possible... Do I need a 3" downpipe too?
thanks
#17
Elite Member
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Join Date: Dec 2006
Location: Taos, New mexico
Posts: 6,598
Total Cats: 561
@FRT_Fun I agree, unfortunately you're right but I have to do with 1,6 for now...
@thenuge26 My idea was to remove the complete exhaust and test with only the downpipe fitted. Would this give the same results in spool as a 3" exhaust or am I completely wrong?
@JasonC SBB no leaks wastegate flapper complete closed
Can somebody check my mapping please???
which 3" exhaust brand would you guys prefer? Available in Europe if possible... Do I need a 3" downpipe too?
thanks
@thenuge26 My idea was to remove the complete exhaust and test with only the downpipe fitted. Would this give the same results in spool as a 3" exhaust or am I completely wrong?
@JasonC SBB no leaks wastegate flapper complete closed
Can somebody check my mapping please???
which 3" exhaust brand would you guys prefer? Available in Europe if possible... Do I need a 3" downpipe too?
thanks
#19
Sounds like you are in Europe, so shipping on an exhaust system would be quite expensive. I own and recommend Enthuza, but in this case I would either find a vendor in Europe or have an exhaust shop build one from scratch.
2.5" exhaust with a straight through muffler would be the setup I would go with. Not sure that 3" is really needed with a 1.6, but it wouldn't hurt either except for being more likely to drone.
2.5" exhaust with a straight through muffler would be the setup I would go with. Not sure that 3" is really needed with a 1.6, but it wouldn't hurt either except for being more likely to drone.